Finding the Fourth Proportional to 118,206,910.70, 177,310,366.05 and 72,857,278.70
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Solution
The fourth proportional to 118,206,910.70, 177,310,366.05 and 72,857,278.70 is: 109,285,918.05
Step by Step Solution
- Step 1: Write the proportion equation
118,206,910.70 : 177,310,366.05 = 72,857,278.70 : x - Step 2: Convert to fraction form
118,206,910.70/177,310,366.05 = 72,857,278.70/x - Step 3: Cross multiply
118,206,910.70x = 177,310,366.05 × 72,857,278.70 - Step 4: Simplify right side
118,206,910.70x = 12,918,350,755,703,870 - Step 5: Solve for x
x = 12,918,350,755,703,870/118,206,910.70 - Step 6: Final answer
x = 109,285,918.05
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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.