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Finding the Fourth Proportional to 187,843.76, 259,221.56 and 102,960.98

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Solution

The fourth proportional to 187,843.76, 259,221.56 and 102,960.98 is: 142,084.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,843.76 : 259,221.56 = 102,960.98 : x
  2. Step 2: Convert to fraction form
    187,843.76/259,221.56 = 102,960.98/x
  3. Step 3: Cross multiply
    187,843.76x = 259,221.56 × 102,960.98
  4. Step 4: Simplify right side
    187,843.76x = 26,689,705,854.73
  5. Step 5: Solve for x
    x = 26,689,705,854.73/187,843.76
  6. Step 6: Final answer
    x = 142,084.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.