Home / 137,723.20-206,584.80-74,518.90

Finding the Fourth Proportional to 137,723.20, 206,584.80 and 74,518.90

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Solution

The fourth proportional to 137,723.20, 206,584.80 and 74,518.90 is: 111,778.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,723.20 : 206,584.80 = 74,518.90 : x
  2. Step 2: Convert to fraction form
    137,723.20/206,584.80 = 74,518.90/x
  3. Step 3: Cross multiply
    137,723.20x = 206,584.80 × 74,518.90
  4. Step 4: Simplify right side
    137,723.20x = 15,394,472,052.72
  5. Step 5: Solve for x
    x = 15,394,472,052.72/137,723.20
  6. Step 6: Final answer
    x = 111,778.35

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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.