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Finding the Fourth Proportional to 110.10, 164.96 and 105.60

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Solution

The fourth proportional to 110.10, 164.96 and 105.60 is: 158.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.10 : 164.96 = 105.60 : x
  2. Step 2: Convert to fraction form
    110.10/164.96 = 105.60/x
  3. Step 3: Cross multiply
    110.10x = 164.96 × 105.60
  4. Step 4: Simplify right side
    110.10x = 17,419.78
  5. Step 5: Solve for x
    x = 17,419.78/110.10
  6. Step 6: Final answer
    x = 158.22

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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.