Home / 140,679,944.70-211,019,917.05-128,138,811.90

Finding the Fourth Proportional to 140,679,944.70, 211,019,917.05 and 128,138,811.90

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Solution

The fourth proportional to 140,679,944.70, 211,019,917.05 and 128,138,811.90 is: 192,208,217.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,679,944.70 : 211,019,917.05 = 128,138,811.90 : x
  2. Step 2: Convert to fraction form
    140,679,944.70/211,019,917.05 = 128,138,811.90/x
  3. Step 3: Cross multiply
    140,679,944.70x = 211,019,917.05 × 128,138,811.90
  4. Step 4: Simplify right side
    140,679,944.70x = 27,039,841,458,023,556
  5. Step 5: Solve for x
    x = 27,039,841,458,023,556/140,679,944.70
  6. Step 6: Final answer
    x = 192,208,217.85

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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.