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Finding the Fourth Proportional to 128,370.54, 192,601.44 and 57,286.72

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Solution

The fourth proportional to 128,370.54, 192,601.44 and 57,286.72 is: 85,950.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,370.54 : 192,601.44 = 57,286.72 : x
  2. Step 2: Convert to fraction form
    128,370.54/192,601.44 = 57,286.72/x
  3. Step 3: Cross multiply
    128,370.54x = 192,601.44 × 57,286.72
  4. Step 4: Simplify right side
    128,370.54x = 11,033,503,515.44
  5. Step 5: Solve for x
    x = 11,033,503,515.44/128,370.54
  6. Step 6: Final answer
    x = 85,950.43

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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.