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Finding the Fourth Proportional to 108.60, 161.99 and 101.04

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Solution

The fourth proportional to 108.60, 161.99 and 101.04 is: 150.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.60 : 161.99 = 101.04 : x
  2. Step 2: Convert to fraction form
    108.60/161.99 = 101.04/x
  3. Step 3: Cross multiply
    108.60x = 161.99 × 101.04
  4. Step 4: Simplify right side
    108.60x = 16,366.96
  5. Step 5: Solve for x
    x = 16,366.96/108.60
  6. Step 6: Final answer
    x = 150.71

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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.