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Finding the Fourth Proportional to 110,897.20, 166,345.80 and 81,372.70

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Solution

The fourth proportional to 110,897.20, 166,345.80 and 81,372.70 is: 122,059.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,897.20 : 166,345.80 = 81,372.70 : x
  2. Step 2: Convert to fraction form
    110,897.20/166,345.80 = 81,372.70/x
  3. Step 3: Cross multiply
    110,897.20x = 166,345.80 × 81,372.70
  4. Step 4: Simplify right side
    110,897.20x = 13,536,006,879.66
  5. Step 5: Solve for x
    x = 13,536,006,879.66/110,897.20
  6. Step 6: Final answer
    x = 122,059.05

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