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Finding the Fourth Proportional to 155.12, 232.68 and 103.86

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Solution

The fourth proportional to 155.12, 232.68 and 103.86 is: 155.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.12 : 232.68 = 103.86 : x
  2. Step 2: Convert to fraction form
    155.12/232.68 = 103.86/x
  3. Step 3: Cross multiply
    155.12x = 232.68 × 103.86
  4. Step 4: Simplify right side
    155.12x = 24,166.14
  5. Step 5: Solve for x
    x = 24,166.14/155.12
  6. Step 6: Final answer
    x = 155.80

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