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Finding the Fourth Proportional to 159,917, 220,704.92 and 92,849

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Solution

The fourth proportional to 159,917, 220,704.92 and 92,849 is: 128,142.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,917 : 220,704.92 = 92,849 : x
  2. Step 2: Convert to fraction form
    159,917/220,704.92 = 92,849/x
  3. Step 3: Cross multiply
    159,917x = 220,704.92 × 92,849
  4. Step 4: Simplify right side
    159,917x = 20,492,231,117.08
  5. Step 5: Solve for x
    x = 20,492,231,117.08/159,917
  6. Step 6: Final answer
    x = 128,142.92

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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.