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Finding the Fourth Proportional to 161,253.92, 241,797.94 and 72,431.20

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Solution

The fourth proportional to 161,253.92, 241,797.94 and 72,431.20 is: 108,609.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,253.92 : 241,797.94 = 72,431.20 : x
  2. Step 2: Convert to fraction form
    161,253.92/241,797.94 = 72,431.20/x
  3. Step 3: Cross multiply
    161,253.92x = 241,797.94 × 72,431.20
  4. Step 4: Simplify right side
    161,253.92x = 17,513,714,951.73
  5. Step 5: Solve for x
    x = 17,513,714,951.73/161,253.92
  6. Step 6: Final answer
    x = 108,609.55

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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.