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Finding the Fourth Proportional to 124,656.40, 187,049.40 and 54,542.80

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Solution

The fourth proportional to 124,656.40, 187,049.40 and 54,542.80 is: 81,842.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,656.40 : 187,049.40 = 54,542.80 : x
  2. Step 2: Convert to fraction form
    124,656.40/187,049.40 = 54,542.80/x
  3. Step 3: Cross multiply
    124,656.40x = 187,049.40 × 54,542.80
  4. Step 4: Simplify right side
    124,656.40x = 10,202,198,014.32
  5. Step 5: Solve for x
    x = 10,202,198,014.32/124,656.40
  6. Step 6: Final answer
    x = 81,842.55

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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.