Home / 445,183.20-667,776-129,647.84

Finding the Fourth Proportional to 445,183.20, 667,776 and 129,647.84

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Solution

The fourth proportional to 445,183.20, 667,776 and 129,647.84 is: 194,472.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,183.20 : 667,776 = 129,647.84 : x
  2. Step 2: Convert to fraction form
    445,183.20/667,776 = 129,647.84/x
  3. Step 3: Cross multiply
    445,183.20x = 667,776 × 129,647.84
  4. Step 4: Simplify right side
    445,183.20x = 86,575,716,003.84
  5. Step 5: Solve for x
    x = 86,575,716,003.84/445,183.20
  6. Step 6: Final answer
    x = 194,472.11

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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.