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Finding the Fourth Proportional to 113.12, 170.88 and 113.12

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Solution

The fourth proportional to 113.12, 170.88 and 113.12 is: 170.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.12 : 170.88 = 113.12 : x
  2. Step 2: Convert to fraction form
    113.12/170.88 = 113.12/x
  3. Step 3: Cross multiply
    113.12x = 170.88 × 113.12
  4. Step 4: Simplify right side
    113.12x = 19,329.95
  5. Step 5: Solve for x
    x = 19,329.95/113.12
  6. Step 6: Final answer
    x = 170.88

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.