Home / 87,631,187.36-120,297,780.05-75,219,733.40

Finding the Fourth Proportional to 87,631,187.36, 120,297,780.05 and 75,219,733.40

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Solution

The fourth proportional to 87,631,187.36, 120,297,780.05 and 75,219,733.40 is: 103,259,663.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,631,187.36 : 120,297,780.05 = 75,219,733.40 : x
  2. Step 2: Convert to fraction form
    87,631,187.36/120,297,780.05 = 75,219,733.40/x
  3. Step 3: Cross multiply
    87,631,187.36x = 120,297,780.05 × 75,219,733.40
  4. Step 4: Simplify right side
    87,631,187.36x = 9,048,766,942,995,250
  5. Step 5: Solve for x
    x = 9,048,766,942,995,250/87,631,187.36
  6. Step 6: Final answer
    x = 103,259,663.78

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.