129.39 is what percent of 124.2 - 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 124.2 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 124.2, so we can write it down as 100%=124.2.
4. We know, that x% equals 129.39 of the output value, so we can write it down as x%=129.39.
5. Now we have two simple equations:
1) 100%=124.2
2) x%=129.39
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%=124.2/129.39
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 129.39 is what percent of 124.2

100%/x%=124.2/129.39
(100/x)*x=(124.2/129.39)*x       - we multiply both sides of the equation by x
100=0.95988870855553*x       - we divide both sides of the equation by (0.95988870855553) to get x
100/0.95988870855553=x
104.17874396135=x
x=104.17874396135

now we have:
129.39 is 104.17874396135% of 124.2