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Finding the Fourth Proportional to 169,458.32, 254,142.92 and 80,534.90

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Solution

The fourth proportional to 169,458.32, 254,142.92 and 80,534.90 is: 120,781.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,458.32 : 254,142.92 = 80,534.90 : x
  2. Step 2: Convert to fraction form
    169,458.32/254,142.92 = 80,534.90/x
  3. Step 3: Cross multiply
    169,458.32x = 254,142.92 × 80,534.90
  4. Step 4: Simplify right side
    169,458.32x = 20,467,374,647.91
  5. Step 5: Solve for x
    x = 20,467,374,647.91/169,458.32
  6. Step 6: Final answer
    x = 120,781.17

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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.