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Finding the Fourth Proportional to 110.02, 164.62 and 68.74

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Solution

The fourth proportional to 110.02, 164.62 and 68.74 is: 102.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.02 : 164.62 = 68.74 : x
  2. Step 2: Convert to fraction form
    110.02/164.62 = 68.74/x
  3. Step 3: Cross multiply
    110.02x = 164.62 × 68.74
  4. Step 4: Simplify right side
    110.02x = 11,315.98
  5. Step 5: Solve for x
    x = 11,315.98/110.02
  6. Step 6: Final answer
    x = 102.85

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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.