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Finding the Fourth Proportional to 123,940.51, 171,037.92 and 67,351.75

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Solution

The fourth proportional to 123,940.51, 171,037.92 and 67,351.75 is: 92,945.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,940.51 : 171,037.92 = 67,351.75 : x
  2. Step 2: Convert to fraction form
    123,940.51/171,037.92 = 67,351.75/x
  3. Step 3: Cross multiply
    123,940.51x = 171,037.92 × 67,351.75
  4. Step 4: Simplify right side
    123,940.51x = 11,519,703,228.36
  5. Step 5: Solve for x
    x = 11,519,703,228.36/123,940.51
  6. Step 6: Final answer
    x = 92,945.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.