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Finding the Fourth Proportional to 136,428.24, 204,770.34 and 83,940.24

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Solution

The fourth proportional to 136,428.24, 204,770.34 and 83,940.24 is: 125,989.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,428.24 : 204,770.34 = 83,940.24 : x
  2. Step 2: Convert to fraction form
    136,428.24/204,770.34 = 83,940.24/x
  3. Step 3: Cross multiply
    136,428.24x = 204,770.34 × 83,940.24
  4. Step 4: Simplify right side
    136,428.24x = 17,188,471,484.48
  5. Step 5: Solve for x
    x = 17,188,471,484.48/136,428.24
  6. Step 6: Final answer
    x = 125,989.10

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