Home / 99,408.11-137,186.97-56,974.83

Finding the Fourth Proportional to 99,408.11, 137,186.97 and 56,974.83

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Solution

The fourth proportional to 99,408.11, 137,186.97 and 56,974.83 is: 78,627.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,408.11 : 137,186.97 = 56,974.83 : x
  2. Step 2: Convert to fraction form
    99,408.11/137,186.97 = 56,974.83/x
  3. Step 3: Cross multiply
    99,408.11x = 137,186.97 × 56,974.83
  4. Step 4: Simplify right side
    99,408.11x = 7,816,204,293.97
  5. Step 5: Solve for x
    x = 7,816,204,293.97/99,408.11
  6. Step 6: Final answer
    x = 78,627.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.