Home / 128,402.14-192,658.34-49,571.72

Finding the Fourth Proportional to 128,402.14, 192,658.34 and 49,571.72

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Solution

The fourth proportional to 128,402.14, 192,658.34 and 49,571.72 is: 74,378.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,402.14 : 192,658.34 = 49,571.72 : x
  2. Step 2: Convert to fraction form
    128,402.14/192,658.34 = 49,571.72/x
  3. Step 3: Cross multiply
    128,402.14x = 192,658.34 × 49,571.72
  4. Step 4: Simplify right side
    128,402.14x = 9,550,405,286.14
  5. Step 5: Solve for x
    x = 9,550,405,286.14/128,402.14
  6. Step 6: Final answer
    x = 74,378.87

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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.