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Finding the Fourth Proportional to 110.66, 166.02 and 98.56

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Solution

The fourth proportional to 110.66, 166.02 and 98.56 is: 147.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.66 : 166.02 = 98.56 : x
  2. Step 2: Convert to fraction form
    110.66/166.02 = 98.56/x
  3. Step 3: Cross multiply
    110.66x = 166.02 × 98.56
  4. Step 4: Simplify right side
    110.66x = 16,363.12
  5. Step 5: Solve for x
    x = 16,363.12/110.66
  6. Step 6: Final answer
    x = 147.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.