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Finding the Fourth Proportional to 126,874.20, 190,311.30 and 63,669.90

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Solution

The fourth proportional to 126,874.20, 190,311.30 and 63,669.90 is: 95,504.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,874.20 : 190,311.30 = 63,669.90 : x
  2. Step 2: Convert to fraction form
    126,874.20/190,311.30 = 63,669.90/x
  3. Step 3: Cross multiply
    126,874.20x = 190,311.30 × 63,669.90
  4. Step 4: Simplify right side
    126,874.20x = 12,117,101,439.87
  5. Step 5: Solve for x
    x = 12,117,101,439.87/126,874.20
  6. Step 6: Final answer
    x = 95,504.85

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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.