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Finding the Fourth Proportional to 154,715.60, 231,766.20 and 84,469.20

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Solution

The fourth proportional to 154,715.60, 231,766.20 and 84,469.20 is: 126,536.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,715.60 : 231,766.20 = 84,469.20 : x
  2. Step 2: Convert to fraction form
    154,715.60/231,766.20 = 84,469.20/x
  3. Step 3: Cross multiply
    154,715.60x = 231,766.20 × 84,469.20
  4. Step 4: Simplify right side
    154,715.60x = 19,577,105,501.04
  5. Step 5: Solve for x
    x = 19,577,105,501.04/154,715.60
  6. Step 6: Final answer
    x = 126,536.08

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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.