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Finding the Fourth Proportional to 118.86, 177.51 and 94.74

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Solution

The fourth proportional to 118.86, 177.51 and 94.74 is: 141.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.86 : 177.51 = 94.74 : x
  2. Step 2: Convert to fraction form
    118.86/177.51 = 94.74/x
  3. Step 3: Cross multiply
    118.86x = 177.51 × 94.74
  4. Step 4: Simplify right side
    118.86x = 16,817.30
  5. Step 5: Solve for x
    x = 16,817.30/118.86
  6. Step 6: Final answer
    x = 141.49

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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.