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Finding the Fourth Proportional to 108.34, 161.79 and 94.66

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Solution

The fourth proportional to 108.34, 161.79 and 94.66 is: 141.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.34 : 161.79 = 94.66 : x
  2. Step 2: Convert to fraction form
    108.34/161.79 = 94.66/x
  3. Step 3: Cross multiply
    108.34x = 161.79 × 94.66
  4. Step 4: Simplify right side
    108.34x = 15,315.04
  5. Step 5: Solve for x
    x = 15,315.04/108.34
  6. Step 6: Final answer
    x = 141.36

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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.