Home / 131,397,544.87-181,329,786.82-72,664,161.78

Finding the Fourth Proportional to 131,397,544.87, 181,329,786.82 and 72,664,161.78

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Solution

The fourth proportional to 131,397,544.87, 181,329,786.82 and 72,664,161.78 is: 100,277,192.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,397,544.87 : 181,329,786.82 = 72,664,161.78 : x
  2. Step 2: Convert to fraction form
    131,397,544.87/181,329,786.82 = 72,664,161.78/x
  3. Step 3: Cross multiply
    131,397,544.87x = 181,329,786.82 × 72,664,161.78
  4. Step 4: Simplify right side
    131,397,544.87x = 13,176,176,965,021,392
  5. Step 5: Solve for x
    x = 13,176,176,965,021,392/131,397,544.87
  6. Step 6: Final answer
    x = 100,277,192.99

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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.