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Finding the Fourth Proportional to 123.03, 169.70 and 88.19

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Solution

The fourth proportional to 123.03, 169.70 and 88.19 is: 121.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.03 : 169.70 = 88.19 : x
  2. Step 2: Convert to fraction form
    123.03/169.70 = 88.19/x
  3. Step 3: Cross multiply
    123.03x = 169.70 × 88.19
  4. Step 4: Simplify right side
    123.03x = 14,964.55
  5. Step 5: Solve for x
    x = 14,964.55/123.03
  6. Step 6: Final answer
    x = 121.63

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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.