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Finding the Fourth Proportional to 201,138.04, 301,745.94 and 68,039.92

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Solution

The fourth proportional to 201,138.04, 301,745.94 and 68,039.92 is: 102,073.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,138.04 : 301,745.94 = 68,039.92 : x
  2. Step 2: Convert to fraction form
    201,138.04/301,745.94 = 68,039.92/x
  3. Step 3: Cross multiply
    201,138.04x = 301,745.94 × 68,039.92
  4. Step 4: Simplify right side
    201,138.04x = 20,530,769,617.92
  5. Step 5: Solve for x
    x = 20,530,769,617.92/201,138.04
  6. Step 6: Final answer
    x = 102,073.03

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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.