Home / 128,258.91-192,339.09-53,414.37

Finding the Fourth Proportional to 128,258.91, 192,339.09 and 53,414.37

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Solution

The fourth proportional to 128,258.91, 192,339.09 and 53,414.37 is: 80,101.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,258.91 : 192,339.09 = 53,414.37 : x
  2. Step 2: Convert to fraction form
    128,258.91/192,339.09 = 53,414.37/x
  3. Step 3: Cross multiply
    128,258.91x = 192,339.09 × 53,414.37
  4. Step 4: Simplify right side
    128,258.91x = 10,273,671,318.72
  5. Step 5: Solve for x
    x = 10,273,671,318.72/128,258.91
  6. Step 6: Final answer
    x = 80,101.03

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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.