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Finding the Fourth Proportional to 118.84, 178.36 and 64.76

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Solution

The fourth proportional to 118.84, 178.36 and 64.76 is: 97.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.84 : 178.36 = 64.76 : x
  2. Step 2: Convert to fraction form
    118.84/178.36 = 64.76/x
  3. Step 3: Cross multiply
    118.84x = 178.36 × 64.76
  4. Step 4: Simplify right side
    118.84x = 11,550.59
  5. Step 5: Solve for x
    x = 11,550.59/118.84
  6. Step 6: Final answer
    x = 97.19

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