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Finding the Fourth Proportional to 110.54, 166.59 and 109.60

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Solution

The fourth proportional to 110.54, 166.59 and 109.60 is: 165.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.54 : 166.59 = 109.60 : x
  2. Step 2: Convert to fraction form
    110.54/166.59 = 109.60/x
  3. Step 3: Cross multiply
    110.54x = 166.59 × 109.60
  4. Step 4: Simplify right side
    110.54x = 18,258.26
  5. Step 5: Solve for x
    x = 18,258.26/110.54
  6. Step 6: Final answer
    x = 165.17

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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.