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Finding the Fourth Proportional to 139,846.20, 209,799.68 and 51,099.57

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Solution

The fourth proportional to 139,846.20, 209,799.68 and 51,099.57 is: 76,660.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,846.20 : 209,799.68 = 51,099.57 : x
  2. Step 2: Convert to fraction form
    139,846.20/209,799.68 = 51,099.57/x
  3. Step 3: Cross multiply
    139,846.20x = 209,799.68 × 51,099.57
  4. Step 4: Simplify right side
    139,846.20x = 10,720,673,434.14
  5. Step 5: Solve for x
    x = 10,720,673,434.14/139,846.20
  6. Step 6: Final answer
    x = 76,660.46

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