Home / 108,420.20-149,635.60-62,470.90

Finding the Fourth Proportional to 108,420.20, 149,635.60 and 62,470.90

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Solution

The fourth proportional to 108,420.20, 149,635.60 and 62,470.90 is: 86,218.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,420.20 : 149,635.60 = 62,470.90 : x
  2. Step 2: Convert to fraction form
    108,420.20/149,635.60 = 62,470.90/x
  3. Step 3: Cross multiply
    108,420.20x = 149,635.60 × 62,470.90
  4. Step 4: Simplify right side
    108,420.20x = 9,347,870,144.61
  5. Step 5: Solve for x
    x = 9,347,870,144.61/108,420.20
  6. Step 6: Final answer
    x = 86,218.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.