Finding the Fourth Proportional to 128,633,385.60, 192,908,612.88 and 42,351,249.24
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Solution
The fourth proportional to 128,633,385.60, 192,908,612.88 and 42,351,249.24 is: 63,513,221.75
Step by Step Solution
- Step 1: Write the proportion equation
128,633,385.60 : 192,908,612.88 = 42,351,249.24 : x - Step 2: Convert to fraction form
128,633,385.60/192,908,612.88 = 42,351,249.24/x - Step 3: Cross multiply
128,633,385.60x = 192,908,612.88 × 42,351,249.24 - Step 4: Simplify right side
128,633,385.60x = 8,169,920,744,623,554 - Step 5: Solve for x
x = 8,169,920,744,623,554/128,633,385.60 - Step 6: Final answer
x = 63,513,221.75
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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.