Home / 206,867.60-285,514.44-121,979.60

Finding the Fourth Proportional to 206,867.60, 285,514.44 and 121,979.60

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Solution

The fourth proportional to 206,867.60, 285,514.44 and 121,979.60 is: 168,353.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,867.60 : 285,514.44 = 121,979.60 : x
  2. Step 2: Convert to fraction form
    206,867.60/285,514.44 = 121,979.60/x
  3. Step 3: Cross multiply
    206,867.60x = 285,514.44 × 121,979.60
  4. Step 4: Simplify right side
    206,867.60x = 34,826,937,185.42
  5. Step 5: Solve for x
    x = 34,826,937,185.42/206,867.60
  6. Step 6: Final answer
    x = 168,353.75

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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.