Home / 123,469.13-170,383.91-72,481.04

Finding the Fourth Proportional to 123,469.13, 170,383.91 and 72,481.04

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Solution

The fourth proportional to 123,469.13, 170,383.91 and 72,481.04 is: 100,021.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,469.13 : 170,383.91 = 72,481.04 : x
  2. Step 2: Convert to fraction form
    123,469.13/170,383.91 = 72,481.04/x
  3. Step 3: Cross multiply
    123,469.13x = 170,383.91 × 72,481.04
  4. Step 4: Simplify right side
    123,469.13x = 12,349,603,240.82
  5. Step 5: Solve for x
    x = 12,349,603,240.82/123,469.13
  6. Step 6: Final answer
    x = 100,021.79

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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.