86.9 is what percent of 67 - 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 67 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 67, so we can write it down as 100%=67.
4. We know, that x% equals 86.9 of the output value, so we can write it down as x%=86.9.
5. Now we have two simple equations:
1) 100%=67
2) x%=86.9
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%=67/86.9
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 86.9 is what percent of 67

100%/x%=67/86.9
(100/x)*x=(67/86.9)*x       - we multiply both sides of the equation by x
100=0.77100115074799*x       - we divide both sides of the equation by (0.77100115074799) to get x
100/0.77100115074799=x
129.70149253731=x
x=129.70149253731

now we have:
86.9 is 129.70149253731% of 67