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Finding the Fourth Proportional to 187,893.80, 281,184.60 and 131,469.20

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Solution

The fourth proportional to 187,893.80, 281,184.60 and 131,469.20 is: 196,744.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,893.80 : 281,184.60 = 131,469.20 : x
  2. Step 2: Convert to fraction form
    187,893.80/281,184.60 = 131,469.20/x
  3. Step 3: Cross multiply
    187,893.80x = 281,184.60 × 131,469.20
  4. Step 4: Simplify right side
    187,893.80x = 36,967,114,414.32
  5. Step 5: Solve for x
    x = 36,967,114,414.32/187,893.80
  6. Step 6: Final answer
    x = 196,744.73

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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.