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Finding the Fourth Proportional to 125,860, 188,790 and 51,989.92

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Solution

The fourth proportional to 125,860, 188,790 and 51,989.92 is: 77,984.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,860 : 188,790 = 51,989.92 : x
  2. Step 2: Convert to fraction form
    125,860/188,790 = 51,989.92/x
  3. Step 3: Cross multiply
    125,860x = 188,790 × 51,989.92
  4. Step 4: Simplify right side
    125,860x = 9,815,176,996.80
  5. Step 5: Solve for x
    x = 9,815,176,996.80/125,860
  6. Step 6: Final answer
    x = 77,984.88

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