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Finding the Fourth Proportional to 159,919.52, 220,701.92 and 91,958.58

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Solution

The fourth proportional to 159,919.52, 220,701.92 and 91,958.58 is: 126,910.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,919.52 : 220,701.92 = 91,958.58 : x
  2. Step 2: Convert to fraction form
    159,919.52/220,701.92 = 91,958.58/x
  3. Step 3: Cross multiply
    159,919.52x = 220,701.92 × 91,958.58
  4. Step 4: Simplify right side
    159,919.52x = 20,295,434,706.68
  5. Step 5: Solve for x
    x = 20,295,434,706.68/159,919.52
  6. Step 6: Final answer
    x = 126,910.31

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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.