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Finding the Fourth Proportional to 108,659.20, 162,770.10 and 73,229.80

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Solution

The fourth proportional to 108,659.20, 162,770.10 and 73,229.80 is: 109,697.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,659.20 : 162,770.10 = 73,229.80 : x
  2. Step 2: Convert to fraction form
    108,659.20/162,770.10 = 73,229.80/x
  3. Step 3: Cross multiply
    108,659.20x = 162,770.10 × 73,229.80
  4. Step 4: Simplify right side
    108,659.20x = 11,919,621,868.98
  5. Step 5: Solve for x
    x = 11,919,621,868.98/108,659.20
  6. Step 6: Final answer
    x = 109,697.31

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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.