Home / 199,040,212.47-298,437,146.85-77,729,013.75

Finding the Fourth Proportional to 199,040,212.47, 298,437,146.85 and 77,729,013.75

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Solution

The fourth proportional to 199,040,212.47, 298,437,146.85 and 77,729,013.75 is: 116,545,419.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,040,212.47 : 298,437,146.85 = 77,729,013.75 : x
  2. Step 2: Convert to fraction form
    199,040,212.47/298,437,146.85 = 77,729,013.75/x
  3. Step 3: Cross multiply
    199,040,212.47x = 298,437,146.85 × 77,729,013.75
  4. Step 4: Simplify right side
    199,040,212.47x = 23,197,225,091,014,420
  5. Step 5: Solve for x
    x = 23,197,225,091,014,420/199,040,212.47
  6. Step 6: Final answer
    x = 116,545,419.66

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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.