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Finding the Fourth Proportional to 259,665.72, 389,459.58 and 82,149.66

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Solution

The fourth proportional to 259,665.72, 389,459.58 and 82,149.66 is: 123,212.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,665.72 : 389,459.58 = 82,149.66 : x
  2. Step 2: Convert to fraction form
    259,665.72/389,459.58 = 82,149.66/x
  3. Step 3: Cross multiply
    259,665.72x = 389,459.58 × 82,149.66
  4. Step 4: Simplify right side
    259,665.72x = 31,993,972,080.74
  5. Step 5: Solve for x
    x = 31,993,972,080.74/259,665.72
  6. Step 6: Final answer
    x = 123,212.15

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