Home / 119,209.92-164,448-80,971.44

Finding the Fourth Proportional to 119,209.92, 164,448 and 80,971.44

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Solution

The fourth proportional to 119,209.92, 164,448 and 80,971.44 is: 111,698.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,209.92 : 164,448 = 80,971.44 : x
  2. Step 2: Convert to fraction form
    119,209.92/164,448 = 80,971.44/x
  3. Step 3: Cross multiply
    119,209.92x = 164,448 × 80,971.44
  4. Step 4: Simplify right side
    119,209.92x = 13,315,591,365.12
  5. Step 5: Solve for x
    x = 13,315,591,365.12/119,209.92
  6. Step 6: Final answer
    x = 111,698.69

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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.