Home / 108,540.20-162,551.10-66,549.80

Finding the Fourth Proportional to 108,540.20, 162,551.10 and 66,549.80

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Solution

The fourth proportional to 108,540.20, 162,551.10 and 66,549.80 is: 99,665.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,540.20 : 162,551.10 = 66,549.80 : x
  2. Step 2: Convert to fraction form
    108,540.20/162,551.10 = 66,549.80/x
  3. Step 3: Cross multiply
    108,540.20x = 162,551.10 × 66,549.80
  4. Step 4: Simplify right side
    108,540.20x = 10,817,743,194.78
  5. Step 5: Solve for x
    x = 10,817,743,194.78/108,540.20
  6. Step 6: Final answer
    x = 99,665.78

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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.