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Finding the Fourth Proportional to 124.84, 173.46 and 123.58

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Solution

The fourth proportional to 124.84, 173.46 and 123.58 is: 171.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.84 : 173.46 = 123.58 : x
  2. Step 2: Convert to fraction form
    124.84/173.46 = 123.58/x
  3. Step 3: Cross multiply
    124.84x = 173.46 × 123.58
  4. Step 4: Simplify right side
    124.84x = 21,436.19
  5. Step 5: Solve for x
    x = 21,436.19/124.84
  6. Step 6: Final answer
    x = 171.71

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.