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Finding the Fourth Proportional to 115,148.54, 158,905.31 and 66,759.85

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Solution

The fourth proportional to 115,148.54, 158,905.31 and 66,759.85 is: 92,128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,148.54 : 158,905.31 = 66,759.85 : x
  2. Step 2: Convert to fraction form
    115,148.54/158,905.31 = 66,759.85/x
  3. Step 3: Cross multiply
    115,148.54x = 158,905.31 × 66,759.85
  4. Step 4: Simplify right side
    115,148.54x = 10,608,494,659.80
  5. Step 5: Solve for x
    x = 10,608,494,659.80/115,148.54
  6. Step 6: Final answer
    x = 92,128.78

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1.5x scale

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.