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Finding the Fourth Proportional to 160.91, 221.94 and 101.83

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Solution

The fourth proportional to 160.91, 221.94 and 101.83 is: 140.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.91 : 221.94 = 101.83 : x
  2. Step 2: Convert to fraction form
    160.91/221.94 = 101.83/x
  3. Step 3: Cross multiply
    160.91x = 221.94 × 101.83
  4. Step 4: Simplify right side
    160.91x = 22,600.15
  5. Step 5: Solve for x
    x = 22,600.15/160.91
  6. Step 6: Final answer
    x = 140.45

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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.