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Finding the Fourth Proportional to 239,080.68, 329,902.65 and 137,100.90

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Solution

The fourth proportional to 239,080.68, 329,902.65 and 137,100.90 is: 189,182.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,080.68 : 329,902.65 = 137,100.90 : x
  2. Step 2: Convert to fraction form
    239,080.68/329,902.65 = 137,100.90/x
  3. Step 3: Cross multiply
    239,080.68x = 329,902.65 × 137,100.90
  4. Step 4: Simplify right side
    239,080.68x = 45,229,950,227.39
  5. Step 5: Solve for x
    x = 45,229,950,227.39/239,080.68
  6. Step 6: Final answer
    x = 189,182.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.