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Finding the Fourth Proportional to 154,793.60, 231,892.30 and 131,361.92

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Solution

The fourth proportional to 154,793.60, 231,892.30 and 131,361.92 is: 196,789.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,793.60 : 231,892.30 = 131,361.92 : x
  2. Step 2: Convert to fraction form
    154,793.60/231,892.30 = 131,361.92/x
  3. Step 3: Cross multiply
    154,793.60x = 231,892.30 × 131,361.92
  4. Step 4: Simplify right side
    154,793.60x = 30,461,817,761.22
  5. Step 5: Solve for x
    x = 30,461,817,761.22/154,793.60
  6. Step 6: Final answer
    x = 196,789.90

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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.