Home / 108,531.20-162,796.80-69,116.60

Finding the Fourth Proportional to 108,531.20, 162,796.80 and 69,116.60

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Solution

The fourth proportional to 108,531.20, 162,796.80 and 69,116.60 is: 103,674.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,531.20 : 162,796.80 = 69,116.60 : x
  2. Step 2: Convert to fraction form
    108,531.20/162,796.80 = 69,116.60/x
  3. Step 3: Cross multiply
    108,531.20x = 162,796.80 × 69,116.60
  4. Step 4: Simplify right side
    108,531.20x = 11,251,961,306.88
  5. Step 5: Solve for x
    x = 11,251,961,306.88/108,531.20
  6. Step 6: Final answer
    x = 103,674.90

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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.