Home / 128,911.27-193,372.16-61,408.61

Finding the Fourth Proportional to 128,911.27, 193,372.16 and 61,408.61

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Solution

The fourth proportional to 128,911.27, 193,372.16 and 61,408.61 is: 92,115.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,911.27 : 193,372.16 = 61,408.61 : x
  2. Step 2: Convert to fraction form
    128,911.27/193,372.16 = 61,408.61/x
  3. Step 3: Cross multiply
    128,911.27x = 193,372.16 × 61,408.61
  4. Step 4: Simplify right side
    128,911.27x = 11,874,715,558.30
  5. Step 5: Solve for x
    x = 11,874,715,558.30/128,911.27
  6. Step 6: Final answer
    x = 92,115.42

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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.