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Finding the Fourth Proportional to 155,072.79, 213,974.82 and 91,422.87

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Solution

The fourth proportional to 155,072.79, 213,974.82 and 91,422.87 is: 126,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,072.79 : 213,974.82 = 91,422.87 : x
  2. Step 2: Convert to fraction form
    155,072.79/213,974.82 = 91,422.87/x
  3. Step 3: Cross multiply
    155,072.79x = 213,974.82 × 91,422.87
  4. Step 4: Simplify right side
    155,072.79x = 19,562,192,152.13
  5. Step 5: Solve for x
    x = 19,562,192,152.13/155,072.79
  6. Step 6: Final answer
    x = 126,148.45

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