37.4 is what percent of 129 - 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 129 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 129, so we can write it down as 100%=129.
4. We know, that x% equals 37.4 of the output value, so we can write it down as x%=37.4.
5. Now we have two simple equations:
1) 100%=129
2) x%=37.4
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%=129/37.4
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 37.4 is what percent of 129

100%/x%=129/37.4
(100/x)*x=(129/37.4)*x       - we multiply both sides of the equation by x
100=3.4491978609626*x       - we divide both sides of the equation by (3.4491978609626) to get x
100/3.4491978609626=x
28.992248062016=x
x=28.992248062016

now we have:
37.4 is 28.992248062016% of 129