Home / 128,679.03-192,940.64-57,588.44

Finding the Fourth Proportional to 128,679.03, 192,940.64 and 57,588.44

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Solution

The fourth proportional to 128,679.03, 192,940.64 and 57,588.44 is: 86,347.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,679.03 : 192,940.64 = 57,588.44 : x
  2. Step 2: Convert to fraction form
    128,679.03/192,940.64 = 57,588.44/x
  3. Step 3: Cross multiply
    128,679.03x = 192,940.64 × 57,588.44
  4. Step 4: Simplify right side
    128,679.03x = 11,111,149,217.56
  5. Step 5: Solve for x
    x = 11,111,149,217.56/128,679.03
  6. Step 6: Final answer
    x = 86,347.79

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1.5x scale

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.