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Finding the Fourth Proportional to 124.03, 169.73 and 121.51

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Solution

The fourth proportional to 124.03, 169.73 and 121.51 is: 166.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.03 : 169.73 = 121.51 : x
  2. Step 2: Convert to fraction form
    124.03/169.73 = 121.51/x
  3. Step 3: Cross multiply
    124.03x = 169.73 × 121.51
  4. Step 4: Simplify right side
    124.03x = 20,623.89
  5. Step 5: Solve for x
    x = 20,623.89/124.03
  6. Step 6: Final answer
    x = 166.28

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.