Home / 138,455.39-207,683.13-71,861.24

Finding the Fourth Proportional to 138,455.39, 207,683.13 and 71,861.24

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Solution

The fourth proportional to 138,455.39, 207,683.13 and 71,861.24 is: 107,791.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,455.39 : 207,683.13 = 71,861.24 : x
  2. Step 2: Convert to fraction form
    138,455.39/207,683.13 = 71,861.24/x
  3. Step 3: Cross multiply
    138,455.39x = 207,683.13 × 71,861.24
  4. Step 4: Simplify right side
    138,455.39x = 14,924,367,248.88
  5. Step 5: Solve for x
    x = 14,924,367,248.88/138,455.39
  6. Step 6: Final answer
    x = 107,791.88

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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.