Home / 12,129,604.88-18,200,089-5,978,233.20

Finding the Fourth Proportional to 12,129,604.88, 18,200,089 and 5,978,233.20

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Solution

The fourth proportional to 12,129,604.88, 18,200,089 and 5,978,233.20 is: 8,970,150.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129,604.88 : 18,200,089 = 5,978,233.20 : x
  2. Step 2: Convert to fraction form
    12,129,604.88/18,200,089 = 5,978,233.20/x
  3. Step 3: Cross multiply
    12,129,604.88x = 18,200,089 × 5,978,233.20
  4. Step 4: Simplify right side
    12,129,604.88x = 108,804,376,302,754.80
  5. Step 5: Solve for x
    x = 108,804,376,302,754.80/12,129,604.88
  6. Step 6: Final answer
    x = 8,970,150.09

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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.