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Finding the Fourth Proportional to 131,642.20, 197,463.30 and 72,659.80

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Solution

The fourth proportional to 131,642.20, 197,463.30 and 72,659.80 is: 108,989.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,642.20 : 197,463.30 = 72,659.80 : x
  2. Step 2: Convert to fraction form
    131,642.20/197,463.30 = 72,659.80/x
  3. Step 3: Cross multiply
    131,642.20x = 197,463.30 × 72,659.80
  4. Step 4: Simplify right side
    131,642.20x = 14,347,643,885.34
  5. Step 5: Solve for x
    x = 14,347,643,885.34/131,642.20
  6. Step 6: Final answer
    x = 108,989.70

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