Home / 320,734.16-481,103.36-84,074.80

Finding the Fourth Proportional to 320,734.16, 481,103.36 and 84,074.80

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Solution

The fourth proportional to 320,734.16, 481,103.36 and 84,074.80 is: 126,112.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,734.16 : 481,103.36 = 84,074.80 : x
  2. Step 2: Convert to fraction form
    320,734.16/481,103.36 = 84,074.80/x
  3. Step 3: Cross multiply
    320,734.16x = 481,103.36 × 84,074.80
  4. Step 4: Simplify right side
    320,734.16x = 40,448,668,771.33
  5. Step 5: Solve for x
    x = 40,448,668,771.33/320,734.16
  6. Step 6: Final answer
    x = 126,112.76

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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.