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Finding the Fourth Proportional to 136,487.20, 204,439.20 and 113,159.20

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Solution

The fourth proportional to 136,487.20, 204,439.20 and 113,159.20 is: 169,497.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,487.20 : 204,439.20 = 113,159.20 : x
  2. Step 2: Convert to fraction form
    136,487.20/204,439.20 = 113,159.20/x
  3. Step 3: Cross multiply
    136,487.20x = 204,439.20 × 113,159.20
  4. Step 4: Simplify right side
    136,487.20x = 23,134,176,320.64
  5. Step 5: Solve for x
    x = 23,134,176,320.64/136,487.20
  6. Step 6: Final answer
    x = 169,497.04

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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.