Home / 128,262.39-192,435.09-61,693.85

Finding the Fourth Proportional to 128,262.39, 192,435.09 and 61,693.85

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Solution

The fourth proportional to 128,262.39, 192,435.09 and 61,693.85 is: 92,560.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,262.39 : 192,435.09 = 61,693.85 : x
  2. Step 2: Convert to fraction form
    128,262.39/192,435.09 = 61,693.85/x
  3. Step 3: Cross multiply
    128,262.39x = 192,435.09 × 61,693.85
  4. Step 4: Simplify right side
    128,262.39x = 11,872,062,173.96
  5. Step 5: Solve for x
    x = 11,872,062,173.96/128,262.39
  6. Step 6: Final answer
    x = 92,560.75

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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.