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Finding the Fourth Proportional to 187,495.48, 281,288.34 and 76,687.80

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Solution

The fourth proportional to 187,495.48, 281,288.34 and 76,687.80 is: 115,050.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,495.48 : 281,288.34 = 76,687.80 : x
  2. Step 2: Convert to fraction form
    187,495.48/281,288.34 = 76,687.80/x
  3. Step 3: Cross multiply
    187,495.48x = 281,288.34 × 76,687.80
  4. Step 4: Simplify right side
    187,495.48x = 21,571,383,960.25
  5. Step 5: Solve for x
    x = 21,571,383,960.25/187,495.48
  6. Step 6: Final answer
    x = 115,050.15

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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.