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Finding the Fourth Proportional to 124.07, 171.22 and 68.82

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Solution

The fourth proportional to 124.07, 171.22 and 68.82 is: 94.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.07 : 171.22 = 68.82 : x
  2. Step 2: Convert to fraction form
    124.07/171.22 = 68.82/x
  3. Step 3: Cross multiply
    124.07x = 171.22 × 68.82
  4. Step 4: Simplify right side
    124.07x = 11,782.87
  5. Step 5: Solve for x
    x = 11,782.87/124.07
  6. Step 6: Final answer
    x = 94.97

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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.