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Finding the Fourth Proportional to 193.16, 266.62 and 123.19

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Solution

The fourth proportional to 193.16, 266.62 and 123.19 is: 170.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.16 : 266.62 = 123.19 : x
  2. Step 2: Convert to fraction form
    193.16/266.62 = 123.19/x
  3. Step 3: Cross multiply
    193.16x = 266.62 × 123.19
  4. Step 4: Simplify right side
    193.16x = 32,844.92
  5. Step 5: Solve for x
    x = 32,844.92/193.16
  6. Step 6: Final answer
    x = 170.04

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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.