129.5 is what percent of 179.5 - 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 179.5 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 179.5, so we can write it down as 100%=179.5.
4. We know, that x% equals 129.5 of the output value, so we can write it down as x%=129.5.
5. Now we have two simple equations:
1) 100%=179.5
2) x%=129.5
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%=179.5/129.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 129.5 is what percent of 179.5

100%/x%=179.5/129.5
(100/x)*x=(179.5/129.5)*x       - we multiply both sides of the equation by x
100=1.3861003861004*x       - we divide both sides of the equation by (1.3861003861004) to get x
100/1.3861003861004=x
72.144846796657=x
x=72.144846796657

now we have:
129.5 is 72.144846796657% of 179.5