Home / 123,993.28-171,111.72-67,404.52

Finding the Fourth Proportional to 123,993.28, 171,111.72 and 67,404.52

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Solution

The fourth proportional to 123,993.28, 171,111.72 and 67,404.52 is: 93,018.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,993.28 : 171,111.72 = 67,404.52 : x
  2. Step 2: Convert to fraction form
    123,993.28/171,111.72 = 67,404.52/x
  3. Step 3: Cross multiply
    123,993.28x = 171,111.72 × 67,404.52
  4. Step 4: Simplify right side
    123,993.28x = 11,533,703,352.97
  5. Step 5: Solve for x
    x = 11,533,703,352.97/123,993.28
  6. Step 6: Final answer
    x = 93,018.78

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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.