Home / 206,678.78-285,198.14-120,645.24

Finding the Fourth Proportional to 206,678.78, 285,198.14 and 120,645.24

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Solution

The fourth proportional to 206,678.78, 285,198.14 and 120,645.24 is: 166,479.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,678.78 : 285,198.14 = 120,645.24 : x
  2. Step 2: Convert to fraction form
    206,678.78/285,198.14 = 120,645.24/x
  3. Step 3: Cross multiply
    206,678.78x = 285,198.14 × 120,645.24
  4. Step 4: Simplify right side
    206,678.78x = 34,407,797,444.63
  5. Step 5: Solve for x
    x = 34,407,797,444.63/206,678.78
  6. Step 6: Final answer
    x = 166,479.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.