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Finding the Fourth Proportional to 121,276.80, 167,272.56 and 80,971.20

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Solution

The fourth proportional to 121,276.80, 167,272.56 and 80,971.20 is: 111,680.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,276.80 : 167,272.56 = 80,971.20 : x
  2. Step 2: Convert to fraction form
    121,276.80/167,272.56 = 80,971.20/x
  3. Step 3: Cross multiply
    121,276.80x = 167,272.56 × 80,971.20
  4. Step 4: Simplify right side
    121,276.80x = 13,544,259,910.27
  5. Step 5: Solve for x
    x = 13,544,259,910.27/121,276.80
  6. Step 6: Final answer
    x = 111,680.55

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