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Finding the Fourth Proportional to 117.27, 175.11 and 93.81

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Solution

The fourth proportional to 117.27, 175.11 and 93.81 is: 140.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.27 : 175.11 = 93.81 : x
  2. Step 2: Convert to fraction form
    117.27/175.11 = 93.81/x
  3. Step 3: Cross multiply
    117.27x = 175.11 × 93.81
  4. Step 4: Simplify right side
    117.27x = 16,426.63
  5. Step 5: Solve for x
    x = 16,426.63/117.27
  6. Step 6: Final answer
    x = 140.08

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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.