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Finding the Fourth Proportional to 81,469.35, 122,204.03 and 67,472.55

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Solution

The fourth proportional to 81,469.35, 122,204.03 and 67,472.55 is: 101,208.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,469.35 : 122,204.03 = 67,472.55 : x
  2. Step 2: Convert to fraction form
    81,469.35/122,204.03 = 67,472.55/x
  3. Step 3: Cross multiply
    81,469.35x = 122,204.03 × 67,472.55
  4. Step 4: Simplify right side
    81,469.35x = 8,245,417,187.01
  5. Step 5: Solve for x
    x = 8,245,417,187.01/81,469.35
  6. Step 6: Final answer
    x = 101,208.83

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1.5x scale

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.