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Finding the Fourth Proportional to 137,908.40, 206,920.20 and 44,442.80

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Solution

The fourth proportional to 137,908.40, 206,920.20 and 44,442.80 is: 66,682.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,908.40 : 206,920.20 = 44,442.80 : x
  2. Step 2: Convert to fraction form
    137,908.40/206,920.20 = 44,442.80/x
  3. Step 3: Cross multiply
    137,908.40x = 206,920.20 × 44,442.80
  4. Step 4: Simplify right side
    137,908.40x = 9,196,113,064.56
  5. Step 5: Solve for x
    x = 9,196,113,064.56/137,908.40
  6. Step 6: Final answer
    x = 66,682.76

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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.