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Finding the Fourth Proportional to 187,388.73, 281,175.48 and 87,555.87

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Solution

The fourth proportional to 187,388.73, 281,175.48 and 87,555.87 is: 131,376.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,388.73 : 281,175.48 = 87,555.87 : x
  2. Step 2: Convert to fraction form
    187,388.73/281,175.48 = 87,555.87/x
  3. Step 3: Cross multiply
    187,388.73x = 281,175.48 × 87,555.87
  4. Step 4: Simplify right side
    187,388.73x = 24,618,563,774.07
  5. Step 5: Solve for x
    x = 24,618,563,774.07/187,388.73
  6. Step 6: Final answer
    x = 131,376.97

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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.