Home / 206,434.83-309,554.64-80,135.58

Finding the Fourth Proportional to 206,434.83, 309,554.64 and 80,135.58

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Solution

The fourth proportional to 206,434.83, 309,554.64 and 80,135.58 is: 120,165.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,434.83 : 309,554.64 = 80,135.58 : x
  2. Step 2: Convert to fraction form
    206,434.83/309,554.64 = 80,135.58/x
  3. Step 3: Cross multiply
    206,434.83x = 309,554.64 × 80,135.58
  4. Step 4: Simplify right side
    206,434.83x = 24,806,340,618.09
  5. Step 5: Solve for x
    x = 24,806,340,618.09/206,434.83
  6. Step 6: Final answer
    x = 120,165.48

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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.