Home / 204,921.42-307,370.97-78,622.26

Finding the Fourth Proportional to 204,921.42, 307,370.97 and 78,622.26

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Solution

The fourth proportional to 204,921.42, 307,370.97 and 78,622.26 is: 117,929.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,921.42 : 307,370.97 = 78,622.26 : x
  2. Step 2: Convert to fraction form
    204,921.42/307,370.97 = 78,622.26/x
  3. Step 3: Cross multiply
    204,921.42x = 307,370.97 × 78,622.26
  4. Step 4: Simplify right side
    204,921.42x = 24,166,200,319.79
  5. Step 5: Solve for x
    x = 24,166,200,319.79/204,921.42
  6. Step 6: Final answer
    x = 117,929.11

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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.