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Finding the Fourth Proportional to 103,131, 154,722.42 and 29,259

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Solution

The fourth proportional to 103,131, 154,722.42 and 29,259 is: 43,895.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,131 : 154,722.42 = 29,259 : x
  2. Step 2: Convert to fraction form
    103,131/154,722.42 = 29,259/x
  3. Step 3: Cross multiply
    103,131x = 154,722.42 × 29,259
  4. Step 4: Simplify right side
    103,131x = 4,527,023,286.78
  5. Step 5: Solve for x
    x = 4,527,023,286.78/103,131
  6. Step 6: Final answer
    x = 43,895.85

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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.