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Finding the Fourth Proportional to 160,671.28, 221,720.28 and 89,049.52

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Solution

The fourth proportional to 160,671.28, 221,720.28 and 89,049.52 is: 122,884.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,671.28 : 221,720.28 = 89,049.52 : x
  2. Step 2: Convert to fraction form
    160,671.28/221,720.28 = 89,049.52/x
  3. Step 3: Cross multiply
    160,671.28x = 221,720.28 × 89,049.52
  4. Step 4: Simplify right side
    160,671.28x = 19,744,084,508.27
  5. Step 5: Solve for x
    x = 19,744,084,508.27/160,671.28
  6. Step 6: Final answer
    x = 122,884.96

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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.