Finding the Fourth Proportional to 114,976,939.20, 172,465,408.80 and 103,639,531.20
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Solution
The fourth proportional to 114,976,939.20, 172,465,408.80 and 103,639,531.20 is: 155,459,296.80
Step by Step Solution
- Step 1: Write the proportion equation
114,976,939.20 : 172,465,408.80 = 103,639,531.20 : x - Step 2: Convert to fraction form
114,976,939.20/172,465,408.80 = 103,639,531.20/x - Step 3: Cross multiply
114,976,939.20x = 172,465,408.80 × 103,639,531.20 - Step 4: Simplify right side
114,976,939.20x = 17,874,234,116,248,356 - Step 5: Solve for x
x = 17,874,234,116,248,356/114,976,939.20 - Step 6: Final answer
x = 155,459,296.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.