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Finding the Fourth Proportional to 187,288.78, 280,961.10 and 68,951.02

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Solution

The fourth proportional to 187,288.78, 280,961.10 and 68,951.02 is: 103,436.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,288.78 : 280,961.10 = 68,951.02 : x
  2. Step 2: Convert to fraction form
    187,288.78/280,961.10 = 68,951.02/x
  3. Step 3: Cross multiply
    187,288.78x = 280,961.10 × 68,951.02
  4. Step 4: Simplify right side
    187,288.78x = 19,372,554,425.32
  5. Step 5: Solve for x
    x = 19,372,554,425.32/187,288.78
  6. Step 6: Final answer
    x = 103,436.81

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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.