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Finding the Fourth Proportional to 83.59, 125.04 and 72.30

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Solution

The fourth proportional to 83.59, 125.04 and 72.30 is: 108.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.59 : 125.04 = 72.30 : x
  2. Step 2: Convert to fraction form
    83.59/125.04 = 72.30/x
  3. Step 3: Cross multiply
    83.59x = 125.04 × 72.30
  4. Step 4: Simplify right side
    83.59x = 9,040.66
  5. Step 5: Solve for x
    x = 9,040.66/83.59
  6. Step 6: Final answer
    x = 108.16

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