Home / 80,789.96-121,228.70-77,844.80

Finding the Fourth Proportional to 80,789.96, 121,228.70 and 77,844.80

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Solution

The fourth proportional to 80,789.96, 121,228.70 and 77,844.80 is: 116,809.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,789.96 : 121,228.70 = 77,844.80 : x
  2. Step 2: Convert to fraction form
    80,789.96/121,228.70 = 77,844.80/x
  3. Step 3: Cross multiply
    80,789.96x = 121,228.70 × 77,844.80
  4. Step 4: Simplify right side
    80,789.96x = 9,437,022,910.39
  5. Step 5: Solve for x
    x = 9,437,022,910.39/80,789.96
  6. Step 6: Final answer
    x = 116,809.36

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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.