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Finding the Fourth Proportional to 137,619,229.20, 206,428,843.80 and 55,777,315.20

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Solution

The fourth proportional to 137,619,229.20, 206,428,843.80 and 55,777,315.20 is: 83,665,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,619,229.20 : 206,428,843.80 = 55,777,315.20 : x
  2. Step 2: Convert to fraction form
    137,619,229.20/206,428,843.80 = 55,777,315.20/x
  3. Step 3: Cross multiply
    137,619,229.20x = 206,428,843.80 × 55,777,315.20
  4. Step 4: Simplify right side
    137,619,229.20x = 11,514,046,687,004,168
  5. Step 5: Solve for x
    x = 11,514,046,687,004,168/137,619,229.20
  6. Step 6: Final answer
    x = 83,665,972.80

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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.