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Finding the Fourth Proportional to 134.94, 186.27 and 118.74

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Solution

The fourth proportional to 134.94, 186.27 and 118.74 is: 163.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.94 : 186.27 = 118.74 : x
  2. Step 2: Convert to fraction form
    134.94/186.27 = 118.74/x
  3. Step 3: Cross multiply
    134.94x = 186.27 × 118.74
  4. Step 4: Simplify right side
    134.94x = 22,117.70
  5. Step 5: Solve for x
    x = 22,117.70/134.94
  6. Step 6: Final answer
    x = 163.91

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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.