Finding the Fourth Proportional to 117,369.81, 161,781.71 and 91,832.13
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Solution
The fourth proportional to 117,369.81, 161,781.71 and 91,832.13 is: 126,580.75
Step by Step Solution
- Step 1: Write the proportion equation
117,369.81 : 161,781.71 = 91,832.13 : x - Step 2: Convert to fraction form
117,369.81/161,781.71 = 91,832.13/x - Step 3: Cross multiply
117,369.81x = 161,781.71 × 91,832.13 - Step 4: Simplify right side
117,369.81x = 14,856,758,565.18 - Step 5: Solve for x
x = 14,856,758,565.18/117,369.81 - Step 6: Final answer
x = 126,580.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.