Finding the Fourth Proportional to 127,712,452.20, 191,568,678.30 and 76,652,125.80
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Solution
The fourth proportional to 127,712,452.20, 191,568,678.30 and 76,652,125.80 is: 114,978,188.70
Step by Step Solution
- Step 1: Write the proportion equation
127,712,452.20 : 191,568,678.30 = 76,652,125.80 : x - Step 2: Convert to fraction form
127,712,452.20/191,568,678.30 = 76,652,125.80/x - Step 3: Cross multiply
127,712,452.20x = 191,568,678.30 × 76,652,125.80 - Step 4: Simplify right side
127,712,452.20x = 14,684,146,428,391,330 - Step 5: Solve for x
x = 14,684,146,428,391,330/127,712,452.20 - Step 6: Final answer
x = 114,978,188.70
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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.