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Finding the Fourth Proportional to 115,546.88, 159,481.32 and 67,815.56

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Solution

The fourth proportional to 115,546.88, 159,481.32 and 67,815.56 is: 93,601.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,546.88 : 159,481.32 = 67,815.56 : x
  2. Step 2: Convert to fraction form
    115,546.88/159,481.32 = 67,815.56/x
  3. Step 3: Cross multiply
    115,546.88x = 159,481.32 × 67,815.56
  4. Step 4: Simplify right side
    115,546.88x = 10,815,315,025.34
  5. Step 5: Solve for x
    x = 10,815,315,025.34/115,546.88
  6. Step 6: Final answer
    x = 93,601.10

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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.