Home / 120,085,782.33-179,922,838.49-80,620,120.74

Finding the Fourth Proportional to 120,085,782.33, 179,922,838.49 and 80,620,120.74

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Solution

The fourth proportional to 120,085,782.33, 179,922,838.49 and 80,620,120.74 is: 120,791,992.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,085,782.33 : 179,922,838.49 = 80,620,120.74 : x
  2. Step 2: Convert to fraction form
    120,085,782.33/179,922,838.49 = 80,620,120.74/x
  3. Step 3: Cross multiply
    120,085,782.33x = 179,922,838.49 × 80,620,120.74
  4. Step 4: Simplify right side
    120,085,782.33x = 14,505,400,962,947,320
  5. Step 5: Solve for x
    x = 14,505,400,962,947,320/120,085,782.33
  6. Step 6: Final answer
    x = 120,791,992.87

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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.