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Finding the Fourth Proportional to 111.39, 153.60 and 95.89

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Solution

The fourth proportional to 111.39, 153.60 and 95.89 is: 132.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.39 : 153.60 = 95.89 : x
  2. Step 2: Convert to fraction form
    111.39/153.60 = 95.89/x
  3. Step 3: Cross multiply
    111.39x = 153.60 × 95.89
  4. Step 4: Simplify right side
    111.39x = 14,728.70
  5. Step 5: Solve for x
    x = 14,728.70/111.39
  6. Step 6: Final answer
    x = 132.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.