Finding the Fourth Proportional to 100,215,061.99, 138,302,310.29 and 56,176,207.05
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Solution
The fourth proportional to 100,215,061.99, 138,302,310.29 and 56,176,207.05 is: 77,526,262.66
Step by Step Solution
- Step 1: Write the proportion equation
100,215,061.99 : 138,302,310.29 = 56,176,207.05 : x - Step 2: Convert to fraction form
100,215,061.99/138,302,310.29 = 56,176,207.05/x - Step 3: Cross multiply
100,215,061.99x = 138,302,310.29 × 56,176,207.05 - Step 4: Simplify right side
100,215,061.99x = 7,769,299,218,344,385 - Step 5: Solve for x
x = 7,769,299,218,344,385/100,215,061.99 - Step 6: Final answer
x = 77,526,262.66
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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.