Home / 206,253.72-309,336.03-73,138.32

Finding the Fourth Proportional to 206,253.72, 309,336.03 and 73,138.32

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Solution

The fourth proportional to 206,253.72, 309,336.03 and 73,138.32 is: 109,691.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,253.72 : 309,336.03 = 73,138.32 : x
  2. Step 2: Convert to fraction form
    206,253.72/309,336.03 = 73,138.32/x
  3. Step 3: Cross multiply
    206,253.72x = 309,336.03 × 73,138.32
  4. Step 4: Simplify right side
    206,253.72x = 22,624,317,549.67
  5. Step 5: Solve for x
    x = 22,624,317,549.67/206,253.72
  6. Step 6: Final answer
    x = 109,691.68

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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.