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Finding the Fourth Proportional to 136,750.98, 204,729.22 and 79,650.78

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Solution

The fourth proportional to 136,750.98, 204,729.22 and 79,650.78 is: 119,244.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,750.98 : 204,729.22 = 79,650.78 : x
  2. Step 2: Convert to fraction form
    136,750.98/204,729.22 = 79,650.78/x
  3. Step 3: Cross multiply
    136,750.98x = 204,729.22 × 79,650.78
  4. Step 4: Simplify right side
    136,750.98x = 16,306,842,061.79
  5. Step 5: Solve for x
    x = 16,306,842,061.79/136,750.98
  6. Step 6: Final answer
    x = 119,244.79

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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.