Home / 128,036,458.80-192,055,186.49-30,992,010.73

Finding the Fourth Proportional to 128,036,458.80, 192,055,186.49 and 30,992,010.73

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Solution

The fourth proportional to 128,036,458.80, 192,055,186.49 and 30,992,010.73 is: 46,488,136.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,036,458.80 : 192,055,186.49 = 30,992,010.73 : x
  2. Step 2: Convert to fraction form
    128,036,458.80/192,055,186.49 = 30,992,010.73/x
  3. Step 3: Cross multiply
    128,036,458.80x = 192,055,186.49 × 30,992,010.73
  4. Step 4: Simplify right side
    128,036,458.80x = 5,952,176,399,815,133
  5. Step 5: Solve for x
    x = 5,952,176,399,815,133/128,036,458.80
  6. Step 6: Final answer
    x = 46,488,136.70

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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.