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Finding the Fourth Proportional to 139,462.80, 209,162.40 and 39,620.88

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Solution

The fourth proportional to 139,462.80, 209,162.40 and 39,620.88 is: 59,422.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,462.80 : 209,162.40 = 39,620.88 : x
  2. Step 2: Convert to fraction form
    139,462.80/209,162.40 = 39,620.88/x
  3. Step 3: Cross multiply
    139,462.80x = 209,162.40 × 39,620.88
  4. Step 4: Simplify right side
    139,462.80x = 8,287,198,350.91
  5. Step 5: Solve for x
    x = 8,287,198,350.91/139,462.80
  6. Step 6: Final answer
    x = 59,422.29

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