Finding the Fourth Proportional to 118,206,839.70, 177,310,259.55 and 72,857,207.70
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Solution
The fourth proportional to 118,206,839.70, 177,310,259.55 and 72,857,207.70 is: 109,285,811.55
Step by Step Solution
- Step 1: Write the proportion equation
118,206,839.70 : 177,310,259.55 = 72,857,207.70 : x - Step 2: Convert to fraction form
118,206,839.70/177,310,259.55 = 72,857,207.70/x - Step 3: Cross multiply
118,206,839.70x = 177,310,259.55 × 72,857,207.70 - Step 4: Simplify right side
118,206,839.70x = 12,918,330,407,375,260 - Step 5: Solve for x
x = 12,918,330,407,375,260/118,206,839.70 - Step 6: Final answer
x = 109,285,811.55
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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.