Home / 128,512.22-192,814.46-57,428.91

Finding the Fourth Proportional to 128,512.22, 192,814.46 and 57,428.91

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Solution

The fourth proportional to 128,512.22, 192,814.46 and 57,428.91 is: 86,163.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,512.22 : 192,814.46 = 57,428.91 : x
  2. Step 2: Convert to fraction form
    128,512.22/192,814.46 = 57,428.91/x
  3. Step 3: Cross multiply
    128,512.22x = 192,814.46 × 57,428.91
  4. Step 4: Simplify right side
    128,512.22x = 11,073,124,711.68
  5. Step 5: Solve for x
    x = 11,073,124,711.68/128,512.22
  6. Step 6: Final answer
    x = 86,163.98

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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.