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Finding the Fourth Proportional to 137,908.40, 206,862.60 and 131,493.20

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Solution

The fourth proportional to 137,908.40, 206,862.60 and 131,493.20 is: 197,239.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,908.40 : 206,862.60 = 131,493.20 : x
  2. Step 2: Convert to fraction form
    137,908.40/206,862.60 = 131,493.20/x
  3. Step 3: Cross multiply
    137,908.40x = 206,862.60 × 131,493.20
  4. Step 4: Simplify right side
    137,908.40x = 27,201,025,234.32
  5. Step 5: Solve for x
    x = 27,201,025,234.32/137,908.40
  6. Step 6: Final answer
    x = 197,239.80

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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.