Home / 80,355.24-120,522.60-21,195.36

Finding the Fourth Proportional to 80,355.24, 120,522.60 and 21,195.36

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Solution

The fourth proportional to 80,355.24, 120,522.60 and 21,195.36 is: 31,790.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,355.24 : 120,522.60 = 21,195.36 : x
  2. Step 2: Convert to fraction form
    80,355.24/120,522.60 = 21,195.36/x
  3. Step 3: Cross multiply
    80,355.24x = 120,522.60 × 21,195.36
  4. Step 4: Simplify right side
    80,355.24x = 2,554,519,895.14
  5. Step 5: Solve for x
    x = 2,554,519,895.14/80,355.24
  6. Step 6: Final answer
    x = 31,790.33

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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.