Home / 206,428,505.40-309,642,758.10-124,799,167.80

Finding the Fourth Proportional to 206,428,505.40, 309,642,758.10 and 124,799,167.80

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Solution

The fourth proportional to 206,428,505.40, 309,642,758.10 and 124,799,167.80 is: 187,198,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,428,505.40 : 309,642,758.10 = 124,799,167.80 : x
  2. Step 2: Convert to fraction form
    206,428,505.40/309,642,758.10 = 124,799,167.80/x
  3. Step 3: Cross multiply
    206,428,505.40x = 309,642,758.10 × 124,799,167.80
  4. Step 4: Simplify right side
    206,428,505.40x = 38,643,158,526,176,712
  5. Step 5: Solve for x
    x = 38,643,158,526,176,712/206,428,505.40
  6. Step 6: Final answer
    x = 187,198,751.70

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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.