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Finding the Fourth Proportional to 125.41, 187.16 and 122.17

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Solution

The fourth proportional to 125.41, 187.16 and 122.17 is: 182.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.41 : 187.16 = 122.17 : x
  2. Step 2: Convert to fraction form
    125.41/187.16 = 122.17/x
  3. Step 3: Cross multiply
    125.41x = 187.16 × 122.17
  4. Step 4: Simplify right side
    125.41x = 22,865.34
  5. Step 5: Solve for x
    x = 22,865.34/125.41
  6. Step 6: Final answer
    x = 182.32

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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.