Home / 128,007.82-192,039.03-49,121.38

Finding the Fourth Proportional to 128,007.82, 192,039.03 and 49,121.38

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Solution

The fourth proportional to 128,007.82, 192,039.03 and 49,121.38 is: 73,692.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,007.82 : 192,039.03 = 49,121.38 : x
  2. Step 2: Convert to fraction form
    128,007.82/192,039.03 = 49,121.38/x
  3. Step 3: Cross multiply
    128,007.82x = 192,039.03 × 49,121.38
  4. Step 4: Simplify right side
    128,007.82x = 9,433,222,167.46
  5. Step 5: Solve for x
    x = 9,433,222,167.46/128,007.82
  6. Step 6: Final answer
    x = 73,692.55

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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.