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Finding the Fourth Proportional to 154,487.70, 231,731.55 and 65,744.10

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Solution

The fourth proportional to 154,487.70, 231,731.55 and 65,744.10 is: 98,616.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,487.70 : 231,731.55 = 65,744.10 : x
  2. Step 2: Convert to fraction form
    154,487.70/231,731.55 = 65,744.10/x
  3. Step 3: Cross multiply
    154,487.70x = 231,731.55 × 65,744.10
  4. Step 4: Simplify right side
    154,487.70x = 15,234,982,196.36
  5. Step 5: Solve for x
    x = 15,234,982,196.36/154,487.70
  6. Step 6: Final answer
    x = 98,616.15

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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.