Home / 206,579.64-309,865.32-135,948.42

Finding the Fourth Proportional to 206,579.64, 309,865.32 and 135,948.42

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Solution

The fourth proportional to 206,579.64, 309,865.32 and 135,948.42 is: 203,919.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,579.64 : 309,865.32 = 135,948.42 : x
  2. Step 2: Convert to fraction form
    206,579.64/309,865.32 = 135,948.42/x
  3. Step 3: Cross multiply
    206,579.64x = 309,865.32 × 135,948.42
  4. Step 4: Simplify right side
    206,579.64x = 42,125,700,666.79
  5. Step 5: Solve for x
    x = 42,125,700,666.79/206,579.64
  6. Step 6: Final answer
    x = 203,919.91

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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.