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Finding the Fourth Proportional to 195.58, 270.09 and 121.93

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Solution

The fourth proportional to 195.58, 270.09 and 121.93 is: 168.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.58 : 270.09 = 121.93 : x
  2. Step 2: Convert to fraction form
    195.58/270.09 = 121.93/x
  3. Step 3: Cross multiply
    195.58x = 270.09 × 121.93
  4. Step 4: Simplify right side
    195.58x = 32,932.07
  5. Step 5: Solve for x
    x = 32,932.07/195.58
  6. Step 6: Final answer
    x = 168.38

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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.