Home / 128,628,305.55-192,942,458.33-74,208,747.15

Finding the Fourth Proportional to 128,628,305.55, 192,942,458.33 and 74,208,747.15

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Solution

The fourth proportional to 128,628,305.55, 192,942,458.33 and 74,208,747.15 is: 111,313,120.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,628,305.55 : 192,942,458.33 = 74,208,747.15 : x
  2. Step 2: Convert to fraction form
    128,628,305.55/192,942,458.33 = 74,208,747.15/x
  3. Step 3: Cross multiply
    128,628,305.55x = 192,942,458.33 × 74,208,747.15
  4. Step 4: Simplify right side
    128,628,305.55x = 14,318,018,104,339,338
  5. Step 5: Solve for x
    x = 14,318,018,104,339,338/128,628,305.55
  6. Step 6: Final answer
    x = 111,313,120.73

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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.