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Finding the Fourth Proportional to 171,711.80, 257,621.70 and 82,968.20

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Solution

The fourth proportional to 171,711.80, 257,621.70 and 82,968.20 is: 124,478.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,711.80 : 257,621.70 = 82,968.20 : x
  2. Step 2: Convert to fraction form
    171,711.80/257,621.70 = 82,968.20/x
  3. Step 3: Cross multiply
    171,711.80x = 257,621.70 × 82,968.20
  4. Step 4: Simplify right side
    171,711.80x = 21,374,408,729.94
  5. Step 5: Solve for x
    x = 21,374,408,729.94/171,711.80
  6. Step 6: Final answer
    x = 124,478.39

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