Home / 199,040,121.72-298,437,010.74-77,728,923

Finding the Fourth Proportional to 199,040,121.72, 298,437,010.74 and 77,728,923

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Solution

The fourth proportional to 199,040,121.72, 298,437,010.74 and 77,728,923 is: 116,545,283.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,040,121.72 : 298,437,010.74 = 77,728,923 : x
  2. Step 2: Convert to fraction form
    199,040,121.72/298,437,010.74 = 77,728,923/x
  3. Step 3: Cross multiply
    199,040,121.72x = 298,437,010.74 × 77,728,923
  4. Step 4: Simplify right side
    199,040,121.72x = 23,197,187,428,159,632
  5. Step 5: Solve for x
    x = 23,197,187,428,159,632/199,040,121.72
  6. Step 6: Final answer
    x = 116,545,283.57

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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.