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Finding the Fourth Proportional to 187,398.87, 281,126.09 and 54,262.51

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Solution

The fourth proportional to 187,398.87, 281,126.09 and 54,262.51 is: 81,401.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,398.87 : 281,126.09 = 54,262.51 : x
  2. Step 2: Convert to fraction form
    187,398.87/281,126.09 = 54,262.51/x
  3. Step 3: Cross multiply
    187,398.87x = 281,126.09 × 54,262.51
  4. Step 4: Simplify right side
    187,398.87x = 15,254,606,702.73
  5. Step 5: Solve for x
    x = 15,254,606,702.73/187,398.87
  6. Step 6: Final answer
    x = 81,401.81

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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.