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Finding the Fourth Proportional to 137,242.92, 205,884.04 and 42,481.42

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Solution

The fourth proportional to 137,242.92, 205,884.04 and 42,481.42 is: 63,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,242.92 : 205,884.04 = 42,481.42 : x
  2. Step 2: Convert to fraction form
    137,242.92/205,884.04 = 42,481.42/x
  3. Step 3: Cross multiply
    137,242.92x = 205,884.04 × 42,481.42
  4. Step 4: Simplify right side
    137,242.92x = 8,746,246,374.54
  5. Step 5: Solve for x
    x = 8,746,246,374.54/137,242.92
  6. Step 6: Final answer
    x = 63,728.22

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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.