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Finding the Fourth Proportional to 126,115.20, 188,913.60 and 63,820.80

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Solution

The fourth proportional to 126,115.20, 188,913.60 and 63,820.80 is: 95,600.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,115.20 : 188,913.60 = 63,820.80 : x
  2. Step 2: Convert to fraction form
    126,115.20/188,913.60 = 63,820.80/x
  3. Step 3: Cross multiply
    126,115.20x = 188,913.60 × 63,820.80
  4. Step 4: Simplify right side
    126,115.20x = 12,056,617,082.88
  5. Step 5: Solve for x
    x = 12,056,617,082.88/126,115.20
  6. Step 6: Final answer
    x = 95,600.03

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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.