Home / 128,540.37-192,849.93-57,522.77

Finding the Fourth Proportional to 128,540.37, 192,849.93 and 57,522.77

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Solution

The fourth proportional to 128,540.37, 192,849.93 and 57,522.77 is: 86,301.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,540.37 : 192,849.93 = 57,522.77 : x
  2. Step 2: Convert to fraction form
    128,540.37/192,849.93 = 57,522.77/x
  3. Step 3: Cross multiply
    128,540.37x = 192,849.93 × 57,522.77
  4. Step 4: Simplify right side
    128,540.37x = 11,093,262,167.91
  5. Step 5: Solve for x
    x = 11,093,262,167.91/128,540.37
  6. Step 6: Final answer
    x = 86,301.78

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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.