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Finding the Fourth Proportional to 137,389.67, 206,097.11 and 42,620.58

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Solution

The fourth proportional to 137,389.67, 206,097.11 and 42,620.58 is: 63,934.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,389.67 : 206,097.11 = 42,620.58 : x
  2. Step 2: Convert to fraction form
    137,389.67/206,097.11 = 42,620.58/x
  3. Step 3: Cross multiply
    137,389.67x = 206,097.11 × 42,620.58
  4. Step 4: Simplify right side
    137,389.67x = 8,783,978,311.25
  5. Step 5: Solve for x
    x = 8,783,978,311.25/137,389.67
  6. Step 6: Final answer
    x = 63,934.78

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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.