Finding the Fourth Proportional to 140,253,213.28, 193,553,717.68 and 78,376,159.84
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Solution
The fourth proportional to 140,253,213.28, 193,553,717.68 and 78,376,159.84 is: 108,161,494.20
Step by Step Solution
- Step 1: Write the proportion equation
140,253,213.28 : 193,553,717.68 = 78,376,159.84 : x - Step 2: Convert to fraction form
140,253,213.28/193,553,717.68 = 78,376,159.84/x - Step 3: Cross multiply
140,253,213.28x = 193,553,717.68 × 78,376,159.84 - Step 4: Simplify right side
140,253,213.28x = 15,169,997,114,513,916 - Step 5: Solve for x
x = 15,169,997,114,513,916/140,253,213.28 - Step 6: Final answer
x = 108,161,494.20
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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.