Home / 104,790-144,289.97-78,986.04

Finding the Fourth Proportional to 104,790, 144,289.97 and 78,986.04

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Solution

The fourth proportional to 104,790, 144,289.97 and 78,986.04 is: 108,759.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,790 : 144,289.97 = 78,986.04 : x
  2. Step 2: Convert to fraction form
    104,790/144,289.97 = 78,986.04/x
  3. Step 3: Cross multiply
    104,790x = 144,289.97 × 78,986.04
  4. Step 4: Simplify right side
    104,790x = 11,396,892,947.09
  5. Step 5: Solve for x
    x = 11,396,892,947.09/104,790
  6. Step 6: Final answer
    x = 108,759.36

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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.