Home / 137,724.20-206,586.30-74,519.90

Finding the Fourth Proportional to 137,724.20, 206,586.30 and 74,519.90

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Solution

The fourth proportional to 137,724.20, 206,586.30 and 74,519.90 is: 111,779.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,724.20 : 206,586.30 = 74,519.90 : x
  2. Step 2: Convert to fraction form
    137,724.20/206,586.30 = 74,519.90/x
  3. Step 3: Cross multiply
    137,724.20x = 206,586.30 × 74,519.90
  4. Step 4: Simplify right side
    137,724.20x = 15,394,790,417.37
  5. Step 5: Solve for x
    x = 15,394,790,417.37/137,724.20
  6. Step 6: Final answer
    x = 111,779.85

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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.