Home / 128,115,173,355.32-192,204,768,520.02-90,415,358,198.84

Finding the Fourth Proportional to 128,115,173,355.32, 192,204,768,520.02 and 90,415,358,198.84

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Solution

The fourth proportional to 128,115,173,355.32, 192,204,768,520.02 and 90,415,358,198.84 is: 135,645,626,806.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,115,173,355.32 : 192,204,768,520.02 = 90,415,358,198.84 : x
  2. Step 2: Convert to fraction form
    128,115,173,355.32/192,204,768,520.02 = 90,415,358,198.84/x
  3. Step 3: Cross multiply
    128,115,173,355.32x = 192,204,768,520.02 × 90,415,358,198.84
  4. Step 4: Simplify right side
    128,115,173,355.32x = 17,378,262,993,262,732,115,968
  5. Step 5: Solve for x
    x = 17,378,262,993,262,732,115,968/128,115,173,355.32
  6. Step 6: Final answer
    x = 135,645,626,806.94

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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.