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Finding the Fourth Proportional to 118.86, 178.34 and 73.14

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Solution

The fourth proportional to 118.86, 178.34 and 73.14 is: 109.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.86 : 178.34 = 73.14 : x
  2. Step 2: Convert to fraction form
    118.86/178.34 = 73.14/x
  3. Step 3: Cross multiply
    118.86x = 178.34 × 73.14
  4. Step 4: Simplify right side
    118.86x = 13,043.79
  5. Step 5: Solve for x
    x = 13,043.79/118.86
  6. Step 6: Final answer
    x = 109.74

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