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Finding the Fourth Proportional to 259,678.37, 389,560.60 and 91,154.97

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Solution

The fourth proportional to 259,678.37, 389,560.60 and 91,154.97 is: 136,747.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,678.37 : 389,560.60 = 91,154.97 : x
  2. Step 2: Convert to fraction form
    259,678.37/389,560.60 = 91,154.97/x
  3. Step 3: Cross multiply
    259,678.37x = 389,560.60 × 91,154.97
  4. Step 4: Simplify right side
    259,678.37x = 35,510,384,350.41
  5. Step 5: Solve for x
    x = 35,510,384,350.41/259,678.37
  6. Step 6: Final answer
    x = 136,747.56

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