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Finding the Fourth Proportional to 110.85, 167.10 and 99.24

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Solution

The fourth proportional to 110.85, 167.10 and 99.24 is: 149.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.85 : 167.10 = 99.24 : x
  2. Step 2: Convert to fraction form
    110.85/167.10 = 99.24/x
  3. Step 3: Cross multiply
    110.85x = 167.10 × 99.24
  4. Step 4: Simplify right side
    110.85x = 16,583.00
  5. Step 5: Solve for x
    x = 16,583.00/110.85
  6. Step 6: Final answer
    x = 149.60

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.