Home / 205,413,624.99-308,120,418.78-90,398,167.29

Finding the Fourth Proportional to 205,413,624.99, 308,120,418.78 and 90,398,167.29

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Solution

The fourth proportional to 205,413,624.99, 308,120,418.78 and 90,398,167.29 is: 135,597,242.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,413,624.99 : 308,120,418.78 = 90,398,167.29 : x
  2. Step 2: Convert to fraction form
    205,413,624.99/308,120,418.78 = 90,398,167.29/x
  3. Step 3: Cross multiply
    205,413,624.99x = 308,120,418.78 × 90,398,167.29
  4. Step 4: Simplify right side
    205,413,624.99x = 27,853,521,162,339,296
  5. Step 5: Solve for x
    x = 27,853,521,162,339,296/205,413,624.99
  6. Step 6: Final answer
    x = 135,597,242.70

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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.