Home / 100,740,378.80-150,858,625.80-80,584,986.80

Finding the Fourth Proportional to 100,740,378.80, 150,858,625.80 and 80,584,986.80

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Solution

The fourth proportional to 100,740,378.80, 150,858,625.80 and 80,584,986.80 is: 120,675,944.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,740,378.80 : 150,858,625.80 = 80,584,986.80 : x
  2. Step 2: Convert to fraction form
    100,740,378.80/150,858,625.80 = 80,584,986.80/x
  3. Step 3: Cross multiply
    100,740,378.80x = 150,858,625.80 × 80,584,986.80
  4. Step 4: Simplify right side
    100,740,378.80x = 12,156,940,368,759,140
  5. Step 5: Solve for x
    x = 12,156,940,368,759,140/100,740,378.80
  6. Step 6: Final answer
    x = 120,675,944.58

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1.5x scale

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.