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Finding the Fourth Proportional to 187,743.69, 281,659.41 and 61,389.90

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Solution

The fourth proportional to 187,743.69, 281,659.41 and 61,389.90 is: 92,099.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,743.69 : 281,659.41 = 61,389.90 : x
  2. Step 2: Convert to fraction form
    187,743.69/281,659.41 = 61,389.90/x
  3. Step 3: Cross multiply
    187,743.69x = 281,659.41 × 61,389.90
  4. Step 4: Simplify right side
    187,743.69x = 17,291,043,013.96
  5. Step 5: Solve for x
    x = 17,291,043,013.96/187,743.69
  6. Step 6: Final answer
    x = 92,099.20

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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.