Home / 204,709.76-307,038.72-80,138.24

Finding the Fourth Proportional to 204,709.76, 307,038.72 and 80,138.24

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Solution

The fourth proportional to 204,709.76, 307,038.72 and 80,138.24 is: 120,197.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,709.76 : 307,038.72 = 80,138.24 : x
  2. Step 2: Convert to fraction form
    204,709.76/307,038.72 = 80,138.24/x
  3. Step 3: Cross multiply
    204,709.76x = 307,038.72 × 80,138.24
  4. Step 4: Simplify right side
    204,709.76x = 24,605,542,632.65
  5. Step 5: Solve for x
    x = 24,605,542,632.65/204,709.76
  6. Step 6: Final answer
    x = 120,197.21

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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.