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Finding the Fourth Proportional to 139,970.99, 209,790.27 and 80,684.12

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Solution

The fourth proportional to 139,970.99, 209,790.27 and 80,684.12 is: 120,930.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,970.99 : 209,790.27 = 80,684.12 : x
  2. Step 2: Convert to fraction form
    139,970.99/209,790.27 = 80,684.12/x
  3. Step 3: Cross multiply
    139,970.99x = 209,790.27 × 80,684.12
  4. Step 4: Simplify right side
    139,970.99x = 16,926,742,270.56
  5. Step 5: Solve for x
    x = 16,926,742,270.56/139,970.99
  6. Step 6: Final answer
    x = 120,930.36

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