Home / 206,707.14-285,221.52-121,812.66

Finding the Fourth Proportional to 206,707.14, 285,221.52 and 121,812.66

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Solution

The fourth proportional to 206,707.14, 285,221.52 and 121,812.66 is: 168,081.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,707.14 : 285,221.52 = 121,812.66 : x
  2. Step 2: Convert to fraction form
    206,707.14/285,221.52 = 121,812.66/x
  3. Step 3: Cross multiply
    206,707.14x = 285,221.52 × 121,812.66
  4. Step 4: Simplify right side
    206,707.14x = 34,743,592,040.44
  5. Step 5: Solve for x
    x = 34,743,592,040.44/206,707.14
  6. Step 6: Final answer
    x = 168,081.24

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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.