Home / 128,015,198.69-192,023,296.25-30,970,750.59

Finding the Fourth Proportional to 128,015,198.69, 192,023,296.25 and 30,970,750.59

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Solution

The fourth proportional to 128,015,198.69, 192,023,296.25 and 30,970,750.59 is: 46,456,246.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,015,198.69 : 192,023,296.25 = 30,970,750.59 : x
  2. Step 2: Convert to fraction form
    128,015,198.69/192,023,296.25 = 30,970,750.59/x
  3. Step 3: Cross multiply
    128,015,198.69x = 192,023,296.25 × 30,970,750.59
  4. Step 4: Simplify right side
    128,015,198.69x = 5,947,105,615,473,579
  5. Step 5: Solve for x
    x = 5,947,105,615,473,579/128,015,198.69
  6. Step 6: Final answer
    x = 46,456,246.42

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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.