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Finding the Fourth Proportional to 171,008.80, 256,124.40 and 108,023.20

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Solution

The fourth proportional to 171,008.80, 256,124.40 and 108,023.20 is: 161,789.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,008.80 : 256,124.40 = 108,023.20 : x
  2. Step 2: Convert to fraction form
    171,008.80/256,124.40 = 108,023.20/x
  3. Step 3: Cross multiply
    171,008.80x = 256,124.40 × 108,023.20
  4. Step 4: Simplify right side
    171,008.80x = 27,667,377,286.08
  5. Step 5: Solve for x
    x = 27,667,377,286.08/171,008.80
  6. Step 6: Final answer
    x = 161,789.20

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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.