Home / 128,176.24-192,286.24-39,427.78

Finding the Fourth Proportional to 128,176.24, 192,286.24 and 39,427.78

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Solution

The fourth proportional to 128,176.24, 192,286.24 and 39,427.78 is: 59,148.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,176.24 : 192,286.24 = 39,427.78 : x
  2. Step 2: Convert to fraction form
    128,176.24/192,286.24 = 39,427.78/x
  3. Step 3: Cross multiply
    128,176.24x = 192,286.24 × 39,427.78
  4. Step 4: Simplify right side
    128,176.24x = 7,581,419,567.75
  5. Step 5: Solve for x
    x = 7,581,419,567.75/128,176.24
  6. Step 6: Final answer
    x = 59,148.40

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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.