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Finding the Fourth Proportional to 187,863.60, 259,250.40 and 102,979.20

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Solution

The fourth proportional to 187,863.60, 259,250.40 and 102,979.20 is: 142,110.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,863.60 : 259,250.40 = 102,979.20 : x
  2. Step 2: Convert to fraction form
    187,863.60/259,250.40 = 102,979.20/x
  3. Step 3: Cross multiply
    187,863.60x = 259,250.40 × 102,979.20
  4. Step 4: Simplify right side
    187,863.60x = 26,697,398,791.68
  5. Step 5: Solve for x
    x = 26,697,398,791.68/187,863.60
  6. Step 6: Final answer
    x = 142,110.55

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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.