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Finding the Fourth Proportional to 113.89, 157.17 and 62.14

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Solution

The fourth proportional to 113.89, 157.17 and 62.14 is: 85.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.89 : 157.17 = 62.14 : x
  2. Step 2: Convert to fraction form
    113.89/157.17 = 62.14/x
  3. Step 3: Cross multiply
    113.89x = 157.17 × 62.14
  4. Step 4: Simplify right side
    113.89x = 9,766.66
  5. Step 5: Solve for x
    x = 9,766.66/113.89
  6. Step 6: Final answer
    x = 85.75

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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.