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Finding the Fourth Proportional to 139,163.58, 208,744.81 and 50,396.36

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Solution

The fourth proportional to 139,163.58, 208,744.81 and 50,396.36 is: 75,594.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,163.58 : 208,744.81 = 50,396.36 : x
  2. Step 2: Convert to fraction form
    139,163.58/208,744.81 = 50,396.36/x
  3. Step 3: Cross multiply
    139,163.58x = 208,744.81 × 50,396.36
  4. Step 4: Simplify right side
    139,163.58x = 10,519,977,423.18
  5. Step 5: Solve for x
    x = 10,519,977,423.18/139,163.58
  6. Step 6: Final answer
    x = 75,594.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.