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Finding the Fourth Proportional to 137,874.90, 206,812.35 and 44,380.65

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Solution

The fourth proportional to 137,874.90, 206,812.35 and 44,380.65 is: 66,570.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,874.90 : 206,812.35 = 44,380.65 : x
  2. Step 2: Convert to fraction form
    137,874.90/206,812.35 = 44,380.65/x
  3. Step 3: Cross multiply
    137,874.90x = 206,812.35 × 44,380.65
  4. Step 4: Simplify right side
    137,874.90x = 9,178,466,521.03
  5. Step 5: Solve for x
    x = 9,178,466,521.03/137,874.90
  6. Step 6: Final answer
    x = 66,570.98

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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.