Home / 138,540.04-207,435.26-71,839.96

Finding the Fourth Proportional to 138,540.04, 207,435.26 and 71,839.96

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Solution

The fourth proportional to 138,540.04, 207,435.26 and 71,839.96 is: 107,565.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,540.04 : 207,435.26 = 71,839.96 : x
  2. Step 2: Convert to fraction form
    138,540.04/207,435.26 = 71,839.96/x
  3. Step 3: Cross multiply
    138,540.04x = 207,435.26 × 71,839.96
  4. Step 4: Simplify right side
    138,540.04x = 14,902,140,780.99
  5. Step 5: Solve for x
    x = 14,902,140,780.99/138,540.04
  6. Step 6: Final answer
    x = 107,565.59

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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.