Home / 84,619.80-126,929.70-76,843.80

Finding the Fourth Proportional to 84,619.80, 126,929.70 and 76,843.80

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Solution

The fourth proportional to 84,619.80, 126,929.70 and 76,843.80 is: 115,265.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,619.80 : 126,929.70 = 76,843.80 : x
  2. Step 2: Convert to fraction form
    84,619.80/126,929.70 = 76,843.80/x
  3. Step 3: Cross multiply
    84,619.80x = 126,929.70 × 76,843.80
  4. Step 4: Simplify right side
    84,619.80x = 9,753,760,480.86
  5. Step 5: Solve for x
    x = 9,753,760,480.86/84,619.80
  6. Step 6: Final answer
    x = 115,265.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.