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Finding the Fourth Proportional to 116.14, 173.16 and 99.12

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Solution

The fourth proportional to 116.14, 173.16 and 99.12 is: 147.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.14 : 173.16 = 99.12 : x
  2. Step 2: Convert to fraction form
    116.14/173.16 = 99.12/x
  3. Step 3: Cross multiply
    116.14x = 173.16 × 99.12
  4. Step 4: Simplify right side
    116.14x = 17,163.62
  5. Step 5: Solve for x
    x = 17,163.62/116.14
  6. Step 6: Final answer
    x = 147.78

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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.