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Finding the Fourth Proportional to 134.21, 200.37 and 111.43

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Solution

The fourth proportional to 134.21, 200.37 and 111.43 is: 166.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.21 : 200.37 = 111.43 : x
  2. Step 2: Convert to fraction form
    134.21/200.37 = 111.43/x
  3. Step 3: Cross multiply
    134.21x = 200.37 × 111.43
  4. Step 4: Simplify right side
    134.21x = 22,326.77
  5. Step 5: Solve for x
    x = 22,326.77/134.21
  6. Step 6: Final answer
    x = 166.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.