129.36 is what percent of 1189.81 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 1189.81 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 1189.81, so we can write it down as 100%=1189.81.
4. We know, that x% equals 129.36 of the output value, so we can write it down as x%=129.36.
5. Now we have two simple equations:
1) 100%=1189.81
2) x%=129.36
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=1189.81/129.36
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 129.36 is what percent of 1189.81

100%/x%=1189.81/129.36
(100/x)*x=(1189.81/129.36)*x       - we multiply both sides of the equation by x
100=9.1976654298083*x       - we divide both sides of the equation by (9.1976654298083) to get x
100/9.1976654298083=x
10.872324152596=x
x=10.872324152596

now we have:
129.36 is 10.872324152596% of 1189.81