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Finding the Fourth Proportional to 146.03, 219.15 and 85.19

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Solution

The fourth proportional to 146.03, 219.15 and 85.19 is: 127.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.03 : 219.15 = 85.19 : x
  2. Step 2: Convert to fraction form
    146.03/219.15 = 85.19/x
  3. Step 3: Cross multiply
    146.03x = 219.15 × 85.19
  4. Step 4: Simplify right side
    146.03x = 18,668.29
  5. Step 5: Solve for x
    x = 18,668.29/146.03
  6. Step 6: Final answer
    x = 127.84

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