Home / 80,359.48-120,525.45-21,195.73

Finding the Fourth Proportional to 80,359.48, 120,525.45 and 21,195.73

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Solution

The fourth proportional to 80,359.48, 120,525.45 and 21,195.73 is: 31,789.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,359.48 : 120,525.45 = 21,195.73 : x
  2. Step 2: Convert to fraction form
    80,359.48/120,525.45 = 21,195.73/x
  3. Step 3: Cross multiply
    80,359.48x = 120,525.45 × 21,195.73
  4. Step 4: Simplify right side
    80,359.48x = 2,554,624,896.33
  5. Step 5: Solve for x
    x = 2,554,624,896.33/80,359.48
  6. Step 6: Final answer
    x = 31,789.96

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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.