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Finding the Fourth Proportional to 124.07, 172.04 and 119.97

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Solution

The fourth proportional to 124.07, 172.04 and 119.97 is: 166.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.07 : 172.04 = 119.97 : x
  2. Step 2: Convert to fraction form
    124.07/172.04 = 119.97/x
  3. Step 3: Cross multiply
    124.07x = 172.04 × 119.97
  4. Step 4: Simplify right side
    124.07x = 20,639.04
  5. Step 5: Solve for x
    x = 20,639.04/124.07
  6. Step 6: Final answer
    x = 166.36

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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.