Home / 208,135,879.38-312,082,805.52-78,753,467.88

Finding the Fourth Proportional to 208,135,879.38, 312,082,805.52 and 78,753,467.88

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Solution

The fourth proportional to 208,135,879.38, 312,082,805.52 and 78,753,467.88 is: 118,084,413.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,135,879.38 : 312,082,805.52 = 78,753,467.88 : x
  2. Step 2: Convert to fraction form
    208,135,879.38/312,082,805.52 = 78,753,467.88/x
  3. Step 3: Cross multiply
    208,135,879.38x = 312,082,805.52 × 78,753,467.88
  4. Step 4: Simplify right side
    208,135,879.38x = 24,577,603,200,419,604
  5. Step 5: Solve for x
    x = 24,577,603,200,419,604/208,135,879.38
  6. Step 6: Final answer
    x = 118,084,413.29

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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.