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Finding the Fourth Proportional to 135,973.72, 203,939.46 and 69,463

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Solution

The fourth proportional to 135,973.72, 203,939.46 and 69,463 is: 104,183.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,973.72 : 203,939.46 = 69,463 : x
  2. Step 2: Convert to fraction form
    135,973.72/203,939.46 = 69,463/x
  3. Step 3: Cross multiply
    135,973.72x = 203,939.46 × 69,463
  4. Step 4: Simplify right side
    135,973.72x = 14,166,246,709.98
  5. Step 5: Solve for x
    x = 14,166,246,709.98/135,973.72
  6. Step 6: Final answer
    x = 104,183.71

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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.