Finding the Fourth Proportional to 121,311,220.20, 181,966,830.30 and 75,394,717.80
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Solution
The fourth proportional to 121,311,220.20, 181,966,830.30 and 75,394,717.80 is: 113,092,076.70
Step by Step Solution
- Step 1: Write the proportion equation
121,311,220.20 : 181,966,830.30 = 75,394,717.80 : x - Step 2: Convert to fraction form
121,311,220.20/181,966,830.30 = 75,394,717.80/x - Step 3: Cross multiply
121,311,220.20x = 181,966,830.30 × 75,394,717.80 - Step 4: Simplify right side
121,311,220.20x = 13,719,337,819,428,990 - Step 5: Solve for x
x = 13,719,337,819,428,990/121,311,220.20 - Step 6: Final answer
x = 113,092,076.70
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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.