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Finding the Fourth Proportional to 175.90, 263.88 and 79.68

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Solution

The fourth proportional to 175.90, 263.88 and 79.68 is: 119.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.90 : 263.88 = 79.68 : x
  2. Step 2: Convert to fraction form
    175.90/263.88 = 79.68/x
  3. Step 3: Cross multiply
    175.90x = 263.88 × 79.68
  4. Step 4: Simplify right side
    175.90x = 21,025.96
  5. Step 5: Solve for x
    x = 21,025.96/175.90
  6. Step 6: Final answer
    x = 119.53

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