134.18 is what percent of 639 - 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 639 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 639, so we can write it down as 100%=639.
4. We know, that x% equals 134.18 of the output value, so we can write it down as x%=134.18.
5. Now we have two simple equations:
1) 100%=639
2) x%=134.18
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%=639/134.18
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 134.18 is what percent of 639

100%/x%=639/134.18
(100/x)*x=(639/134.18)*x       - we multiply both sides of the equation by x
100=4.7622596512148*x       - we divide both sides of the equation by (4.7622596512148) to get x
100/4.7622596512148=x
20.998435054773=x
x=20.998435054773

now we have:
134.18 is 20.998435054773% of 639