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Finding the Fourth Proportional to 110.16, 164.26 and 106.21

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Solution

The fourth proportional to 110.16, 164.26 and 106.21 is: 158.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.16 : 164.26 = 106.21 : x
  2. Step 2: Convert to fraction form
    110.16/164.26 = 106.21/x
  3. Step 3: Cross multiply
    110.16x = 164.26 × 106.21
  4. Step 4: Simplify right side
    110.16x = 17,446.05
  5. Step 5: Solve for x
    x = 17,446.05/110.16
  6. Step 6: Final answer
    x = 158.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.