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Finding the Fourth Proportional to 139,961.80, 209,950.80 and 40,129.30

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Solution

The fourth proportional to 139,961.80, 209,950.80 and 40,129.30 is: 60,196.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,961.80 : 209,950.80 = 40,129.30 : x
  2. Step 2: Convert to fraction form
    139,961.80/209,950.80 = 40,129.30/x
  3. Step 3: Cross multiply
    139,961.80x = 209,950.80 × 40,129.30
  4. Step 4: Simplify right side
    139,961.80x = 8,425,178,638.44
  5. Step 5: Solve for x
    x = 8,425,178,638.44/139,961.80
  6. Step 6: Final answer
    x = 60,196.27

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