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Finding the Fourth Proportional to 108.73, 162.30 and 94.38

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Solution

The fourth proportional to 108.73, 162.30 and 94.38 is: 140.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.73 : 162.30 = 94.38 : x
  2. Step 2: Convert to fraction form
    108.73/162.30 = 94.38/x
  3. Step 3: Cross multiply
    108.73x = 162.30 × 94.38
  4. Step 4: Simplify right side
    108.73x = 15,317.87
  5. Step 5: Solve for x
    x = 15,317.87/108.73
  6. Step 6: Final answer
    x = 140.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.