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Finding the Fourth Proportional to 138,171.20, 207,247.80 and 36,967.88

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Solution

The fourth proportional to 138,171.20, 207,247.80 and 36,967.88 is: 55,449.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,171.20 : 207,247.80 = 36,967.88 : x
  2. Step 2: Convert to fraction form
    138,171.20/207,247.80 = 36,967.88/x
  3. Step 3: Cross multiply
    138,171.20x = 207,247.80 × 36,967.88
  4. Step 4: Simplify right side
    138,171.20x = 7,661,511,800.66
  5. Step 5: Solve for x
    x = 7,661,511,800.66/138,171.20
  6. Step 6: Final answer
    x = 55,449.41

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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.