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Finding the Fourth Proportional to 135,974.72, 203,940.96 and 69,464

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Solution

The fourth proportional to 135,974.72, 203,940.96 and 69,464 is: 104,185.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,974.72 : 203,940.96 = 69,464 : x
  2. Step 2: Convert to fraction form
    135,974.72/203,940.96 = 69,464/x
  3. Step 3: Cross multiply
    135,974.72x = 203,940.96 × 69,464
  4. Step 4: Simplify right side
    135,974.72x = 14,166,554,845.44
  5. Step 5: Solve for x
    x = 14,166,554,845.44/135,974.72
  6. Step 6: Final answer
    x = 104,185.21

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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.