Finding the Fourth Proportional to 129,103,105.20, 193,528,686.60 and 115,498,215.60
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Solution
The fourth proportional to 129,103,105.20, 193,528,686.60 and 115,498,215.60 is: 173,134,627.05
Step by Step Solution
- Step 1: Write the proportion equation
129,103,105.20 : 193,528,686.60 = 115,498,215.60 : x - Step 2: Convert to fraction form
129,103,105.20/193,528,686.60 = 115,498,215.60/x - Step 3: Cross multiply
129,103,105.20x = 193,528,686.60 × 115,498,215.60 - Step 4: Simplify right side
129,103,105.20x = 22,352,217,969,711,628 - Step 5: Solve for x
x = 22,352,217,969,711,628/129,103,105.20 - Step 6: Final answer
x = 173,134,627.05
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.