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Finding the Fourth Proportional to 110.89, 153.72 and 107.11

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Solution

The fourth proportional to 110.89, 153.72 and 107.11 is: 148.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.89 : 153.72 = 107.11 : x
  2. Step 2: Convert to fraction form
    110.89/153.72 = 107.11/x
  3. Step 3: Cross multiply
    110.89x = 153.72 × 107.11
  4. Step 4: Simplify right side
    110.89x = 16,465.14
  5. Step 5: Solve for x
    x = 16,465.14/110.89
  6. Step 6: Final answer
    x = 148.48

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.