Home / 108,705.20-162,839.10-73,275.80

Finding the Fourth Proportional to 108,705.20, 162,839.10 and 73,275.80

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Solution

The fourth proportional to 108,705.20, 162,839.10 and 73,275.80 is: 109,766.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,705.20 : 162,839.10 = 73,275.80 : x
  2. Step 2: Convert to fraction form
    108,705.20/162,839.10 = 73,275.80/x
  3. Step 3: Cross multiply
    108,705.20x = 162,839.10 × 73,275.80
  4. Step 4: Simplify right side
    108,705.20x = 11,932,165,323.78
  5. Step 5: Solve for x
    x = 11,932,165,323.78/108,705.20
  6. Step 6: Final answer
    x = 109,766.28

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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.