Finding the Fourth Proportional to 102,711.25, 141,781.02 and 91,937.09
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Solution
The fourth proportional to 102,711.25, 141,781.02 and 91,937.09 is: 126,908.53
Step by Step Solution
- Step 1: Write the proportion equation
102,711.25 : 141,781.02 = 91,937.09 : x - Step 2: Convert to fraction form
102,711.25/141,781.02 = 91,937.09/x - Step 3: Cross multiply
102,711.25x = 141,781.02 × 91,937.09 - Step 4: Simplify right side
102,711.25x = 13,034,934,405.72 - Step 5: Solve for x
x = 13,034,934,405.72/102,711.25 - Step 6: Final answer
x = 126,908.53
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1.5x scale
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.