Home / 258,067.08-387,100.48-80,589.30

Finding the Fourth Proportional to 258,067.08, 387,100.48 and 80,589.30

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Solution

The fourth proportional to 258,067.08, 387,100.48 and 80,589.30 is: 120,883.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,067.08 : 387,100.48 = 80,589.30 : x
  2. Step 2: Convert to fraction form
    258,067.08/387,100.48 = 80,589.30/x
  3. Step 3: Cross multiply
    258,067.08x = 387,100.48 × 80,589.30
  4. Step 4: Simplify right side
    258,067.08x = 31,196,156,712.86
  5. Step 5: Solve for x
    x = 31,196,156,712.86/258,067.08
  6. Step 6: Final answer
    x = 120,883.91

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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.