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Finding the Fourth Proportional to 134.93, 186.13 and 112.91

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Solution

The fourth proportional to 134.93, 186.13 and 112.91 is: 155.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.93 : 186.13 = 112.91 : x
  2. Step 2: Convert to fraction form
    134.93/186.13 = 112.91/x
  3. Step 3: Cross multiply
    134.93x = 186.13 × 112.91
  4. Step 4: Simplify right side
    134.93x = 21,015.94
  5. Step 5: Solve for x
    x = 21,015.94/134.93
  6. Step 6: Final answer
    x = 155.75

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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.