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Finding the Fourth Proportional to 187,796.28, 281,694.34 and 45,640.80

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Solution

The fourth proportional to 187,796.28, 281,694.34 and 45,640.80 is: 68,461.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,796.28 : 281,694.34 = 45,640.80 : x
  2. Step 2: Convert to fraction form
    187,796.28/281,694.34 = 45,640.80/x
  3. Step 3: Cross multiply
    187,796.28x = 281,694.34 × 45,640.80
  4. Step 4: Simplify right side
    187,796.28x = 12,856,755,033.07
  5. Step 5: Solve for x
    x = 12,856,755,033.07/187,796.28
  6. Step 6: Final answer
    x = 68,461.18

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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.