Home / 128,379.18-192,609.77-53,507.23

Finding the Fourth Proportional to 128,379.18, 192,609.77 and 53,507.23

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Solution

The fourth proportional to 128,379.18, 192,609.77 and 53,507.23 is: 80,277.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,379.18 : 192,609.77 = 53,507.23 : x
  2. Step 2: Convert to fraction form
    128,379.18/192,609.77 = 53,507.23/x
  3. Step 3: Cross multiply
    128,379.18x = 192,609.77 × 53,507.23
  4. Step 4: Simplify right side
    128,379.18x = 10,306,016,049.47
  5. Step 5: Solve for x
    x = 10,306,016,049.47/128,379.18
  6. Step 6: Final answer
    x = 80,277.94

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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.