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Finding the Fourth Proportional to 108.75, 150.17 and 94.05

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Solution

The fourth proportional to 108.75, 150.17 and 94.05 is: 129.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.75 : 150.17 = 94.05 : x
  2. Step 2: Convert to fraction form
    108.75/150.17 = 94.05/x
  3. Step 3: Cross multiply
    108.75x = 150.17 × 94.05
  4. Step 4: Simplify right side
    108.75x = 14,123.02
  5. Step 5: Solve for x
    x = 14,123.02/108.75
  6. Step 6: Final answer
    x = 129.87

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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.