Home / 202,145,939.45-278,961,396.24-109,326,447.20

Finding the Fourth Proportional to 202,145,939.45, 278,961,396.24 and 109,326,447.20

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Solution

The fourth proportional to 202,145,939.45, 278,961,396.24 and 109,326,447.20 is: 150,870,497.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,145,939.45 : 278,961,396.24 = 109,326,447.20 : x
  2. Step 2: Convert to fraction form
    202,145,939.45/278,961,396.24 = 109,326,447.20/x
  3. Step 3: Cross multiply
    202,145,939.45x = 278,961,396.24 × 109,326,447.20
  4. Step 4: Simplify right side
    202,145,939.45x = 30,497,858,356,870,640
  5. Step 5: Solve for x
    x = 30,497,858,356,870,640/202,145,939.45
  6. Step 6: Final answer
    x = 150,870,497.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.