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Finding the Fourth Proportional to 154,491.01, 231,760.20 and 65,720.68

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Solution

The fourth proportional to 154,491.01, 231,760.20 and 65,720.68 is: 98,591.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,491.01 : 231,760.20 = 65,720.68 : x
  2. Step 2: Convert to fraction form
    154,491.01/231,760.20 = 65,720.68/x
  3. Step 3: Cross multiply
    154,491.01x = 231,760.20 × 65,720.68
  4. Step 4: Simplify right side
    154,491.01x = 15,231,437,940.94
  5. Step 5: Solve for x
    x = 15,231,437,940.94/154,491.01
  6. Step 6: Final answer
    x = 98,591.10

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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.