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Finding the Fourth Proportional to 122.58, 182.91 and 113.52

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Solution

The fourth proportional to 122.58, 182.91 and 113.52 is: 169.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.58 : 182.91 = 113.52 : x
  2. Step 2: Convert to fraction form
    122.58/182.91 = 113.52/x
  3. Step 3: Cross multiply
    122.58x = 182.91 × 113.52
  4. Step 4: Simplify right side
    122.58x = 20,763.94
  5. Step 5: Solve for x
    x = 20,763.94/122.58
  6. Step 6: Final answer
    x = 169.39

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.