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Finding the Fourth Proportional to 124.44, 171.64 and 98.17

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Solution

The fourth proportional to 124.44, 171.64 and 98.17 is: 135.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.44 : 171.64 = 98.17 : x
  2. Step 2: Convert to fraction form
    124.44/171.64 = 98.17/x
  3. Step 3: Cross multiply
    124.44x = 171.64 × 98.17
  4. Step 4: Simplify right side
    124.44x = 16,849.90
  5. Step 5: Solve for x
    x = 16,849.90/124.44
  6. Step 6: Final answer
    x = 135.41

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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.