Home / 128,536.27-192,843.79-57,518.71

Finding the Fourth Proportional to 128,536.27, 192,843.79 and 57,518.71

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Solution

The fourth proportional to 128,536.27, 192,843.79 and 57,518.71 is: 86,295.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,536.27 : 192,843.79 = 57,518.71 : x
  2. Step 2: Convert to fraction form
    128,536.27/192,843.79 = 57,518.71/x
  3. Step 3: Cross multiply
    128,536.27x = 192,843.79 × 57,518.71
  4. Step 4: Simplify right side
    128,536.27x = 11,092,125,406.40
  5. Step 5: Solve for x
    x = 11,092,125,406.40/128,536.27
  6. Step 6: Final answer
    x = 86,295.69

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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.