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Finding the Fourth Proportional to 154,076.80, 231,115.20 and 87,491.20

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Solution

The fourth proportional to 154,076.80, 231,115.20 and 87,491.20 is: 131,236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,076.80 : 231,115.20 = 87,491.20 : x
  2. Step 2: Convert to fraction form
    154,076.80/231,115.20 = 87,491.20/x
  3. Step 3: Cross multiply
    154,076.80x = 231,115.20 × 87,491.20
  4. Step 4: Simplify right side
    154,076.80x = 20,220,546,186.24
  5. Step 5: Solve for x
    x = 20,220,546,186.24/154,076.80
  6. Step 6: Final answer
    x = 131,236.80

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