Home / 144,129,958.87-198,899,535.06-78,050,571.09

Finding the Fourth Proportional to 144,129,958.87, 198,899,535.06 and 78,050,571.09

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Solution

The fourth proportional to 144,129,958.87, 198,899,535.06 and 78,050,571.09 is: 107,709,891.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,129,958.87 : 198,899,535.06 = 78,050,571.09 : x
  2. Step 2: Convert to fraction form
    144,129,958.87/198,899,535.06 = 78,050,571.09/x
  3. Step 3: Cross multiply
    144,129,958.87x = 198,899,535.06 × 78,050,571.09
  4. Step 4: Simplify right side
    144,129,958.87x = 15,524,222,300,968,478
  5. Step 5: Solve for x
    x = 15,524,222,300,968,478/144,129,958.87
  6. Step 6: Final answer
    x = 107,709,891.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.