Home / 99,408.11-137,186.99-56,974.85

Finding the Fourth Proportional to 99,408.11, 137,186.99 and 56,974.85

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Solution

The fourth proportional to 99,408.11, 137,186.99 and 56,974.85 is: 78,627.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,408.11 : 137,186.99 = 56,974.85 : x
  2. Step 2: Convert to fraction form
    99,408.11/137,186.99 = 56,974.85/x
  3. Step 3: Cross multiply
    99,408.11x = 137,186.99 × 56,974.85
  4. Step 4: Simplify right side
    99,408.11x = 7,816,207,892.33
  5. Step 5: Solve for x
    x = 7,816,207,892.33/99,408.11
  6. Step 6: Final answer
    x = 78,627.47

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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.