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Finding the Fourth Proportional to 193.99, 267.73 and 111.12

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Solution

The fourth proportional to 193.99, 267.73 and 111.12 is: 153.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.99 : 267.73 = 111.12 : x
  2. Step 2: Convert to fraction form
    193.99/267.73 = 111.12/x
  3. Step 3: Cross multiply
    193.99x = 267.73 × 111.12
  4. Step 4: Simplify right side
    193.99x = 29,750.16
  5. Step 5: Solve for x
    x = 29,750.16/193.99
  6. Step 6: Final answer
    x = 153.36

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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.