Home / 128,583.06-192,905.38-53,661.54

Finding the Fourth Proportional to 128,583.06, 192,905.38 and 53,661.54

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Solution

The fourth proportional to 128,583.06, 192,905.38 and 53,661.54 is: 80,505.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,583.06 : 192,905.38 = 53,661.54 : x
  2. Step 2: Convert to fraction form
    128,583.06/192,905.38 = 53,661.54/x
  3. Step 3: Cross multiply
    128,583.06x = 192,905.38 × 53,661.54
  4. Step 4: Simplify right side
    128,583.06x = 10,351,599,765.09
  5. Step 5: Solve for x
    x = 10,351,599,765.09/128,583.06
  6. Step 6: Final answer
    x = 80,505.16

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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.