Home / 154,197.81-231,321.20-54,388.53

Finding the Fourth Proportional to 154,197.81, 231,321.20 and 54,388.53

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Solution

The fourth proportional to 154,197.81, 231,321.20 and 54,388.53 is: 81,591.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,197.81 : 231,321.20 = 54,388.53 : x
  2. Step 2: Convert to fraction form
    154,197.81/231,321.20 = 54,388.53/x
  3. Step 3: Cross multiply
    154,197.81x = 231,321.20 × 54,388.53
  4. Step 4: Simplify right side
    154,197.81x = 12,581,219,753.89
  5. Step 5: Solve for x
    x = 12,581,219,753.89/154,197.81
  6. Step 6: Final answer
    x = 81,591.43

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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.