Home / 205,013.90-307,509.92-55,251.79

Finding the Fourth Proportional to 205,013.90, 307,509.92 and 55,251.79

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Solution

The fourth proportional to 205,013.90, 307,509.92 and 55,251.79 is: 82,874.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,013.90 : 307,509.92 = 55,251.79 : x
  2. Step 2: Convert to fraction form
    205,013.90/307,509.92 = 55,251.79/x
  3. Step 3: Cross multiply
    205,013.90x = 307,509.92 × 55,251.79
  4. Step 4: Simplify right side
    205,013.90x = 16,990,472,477.72
  5. Step 5: Solve for x
    x = 16,990,472,477.72/205,013.90
  6. Step 6: Final answer
    x = 82,874.73

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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.