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Finding the Fourth Proportional to 108,221.20, 162,331.80 and 63,869.20

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Solution

The fourth proportional to 108,221.20, 162,331.80 and 63,869.20 is: 95,803.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,221.20 : 162,331.80 = 63,869.20 : x
  2. Step 2: Convert to fraction form
    108,221.20/162,331.80 = 63,869.20/x
  3. Step 3: Cross multiply
    108,221.20x = 162,331.80 × 63,869.20
  4. Step 4: Simplify right side
    108,221.20x = 10,368,002,200.56
  5. Step 5: Solve for x
    x = 10,368,002,200.56/108,221.20
  6. Step 6: Final answer
    x = 95,803.80

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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.