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Finding the Fourth Proportional to 100,618.06, 138,844.80 and 58,179.34

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Solution

The fourth proportional to 100,618.06, 138,844.80 and 58,179.34 is: 80,282.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,618.06 : 138,844.80 = 58,179.34 : x
  2. Step 2: Convert to fraction form
    100,618.06/138,844.80 = 58,179.34/x
  3. Step 3: Cross multiply
    100,618.06x = 138,844.80 × 58,179.34
  4. Step 4: Simplify right side
    100,618.06x = 8,077,898,826.43
  5. Step 5: Solve for x
    x = 8,077,898,826.43/100,618.06
  6. Step 6: Final answer
    x = 80,282.79

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