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Finding the Fourth Proportional to 138,179.71, 207,268.80 and 119,402.65

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Solution

The fourth proportional to 138,179.71, 207,268.80 and 119,402.65 is: 179,103.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,179.71 : 207,268.80 = 119,402.65 : x
  2. Step 2: Convert to fraction form
    138,179.71/207,268.80 = 119,402.65/x
  3. Step 3: Cross multiply
    138,179.71x = 207,268.80 × 119,402.65
  4. Step 4: Simplify right side
    138,179.71x = 24,748,443,982.32
  5. Step 5: Solve for x
    x = 24,748,443,982.32/138,179.71
  6. Step 6: Final answer
    x = 179,103.31

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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.