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Finding the Fourth Proportional to 188,391.44, 259,974.96 and 103,508.48

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Solution

The fourth proportional to 188,391.44, 259,974.96 and 103,508.48 is: 142,838.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,391.44 : 259,974.96 = 103,508.48 : x
  2. Step 2: Convert to fraction form
    188,391.44/259,974.96 = 103,508.48/x
  3. Step 3: Cross multiply
    188,391.44x = 259,974.96 × 103,508.48
  4. Step 4: Simplify right side
    188,391.44x = 26,909,612,947.66
  5. Step 5: Solve for x
    x = 26,909,612,947.66/188,391.44
  6. Step 6: Final answer
    x = 142,838.83

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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.