Home / 205,418.38-307,916.16-100,107.04

Finding the Fourth Proportional to 205,418.38, 307,916.16 and 100,107.04

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Solution

The fourth proportional to 205,418.38, 307,916.16 and 100,107.04 is: 150,057.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,418.38 : 307,916.16 = 100,107.04 : x
  2. Step 2: Convert to fraction form
    205,418.38/307,916.16 = 100,107.04/x
  3. Step 3: Cross multiply
    205,418.38x = 307,916.16 × 100,107.04
  4. Step 4: Simplify right side
    205,418.38x = 30,824,575,345.77
  5. Step 5: Solve for x
    x = 30,824,575,345.77/205,418.38
  6. Step 6: Final answer
    x = 150,057.53

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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.