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Finding the Fourth Proportional to 169,458.57, 254,143.31 and 80,535.15

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Solution

The fourth proportional to 169,458.57, 254,143.31 and 80,535.15 is: 120,781.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,458.57 : 254,143.31 = 80,535.15 : x
  2. Step 2: Convert to fraction form
    169,458.57/254,143.31 = 80,535.15/x
  3. Step 3: Cross multiply
    169,458.57x = 254,143.31 × 80,535.15
  4. Step 4: Simplify right side
    169,458.57x = 20,467,469,189.67
  5. Step 5: Solve for x
    x = 20,467,469,189.67/169,458.57
  6. Step 6: Final answer
    x = 120,781.55

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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.