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Finding the Fourth Proportional to 160.12, 220.92 and 97.92

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Solution

The fourth proportional to 160.12, 220.92 and 97.92 is: 135.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.12 : 220.92 = 97.92 : x
  2. Step 2: Convert to fraction form
    160.12/220.92 = 97.92/x
  3. Step 3: Cross multiply
    160.12x = 220.92 × 97.92
  4. Step 4: Simplify right side
    160.12x = 21,632.49
  5. Step 5: Solve for x
    x = 21,632.49/160.12
  6. Step 6: Final answer
    x = 135.10

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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.