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Finding the Fourth Proportional to 108,069.70, 162,200.55 and 63,640.90

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Solution

The fourth proportional to 108,069.70, 162,200.55 and 63,640.90 is: 95,517.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,069.70 : 162,200.55 = 63,640.90 : x
  2. Step 2: Convert to fraction form
    108,069.70/162,200.55 = 63,640.90/x
  3. Step 3: Cross multiply
    108,069.70x = 162,200.55 × 63,640.90
  4. Step 4: Simplify right side
    108,069.70x = 10,322,588,982.50
  5. Step 5: Solve for x
    x = 10,322,588,982.50/108,069.70
  6. Step 6: Final answer
    x = 95,517.88

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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.