Home / 206,921.39-310,300.07-71,945.21

Finding the Fourth Proportional to 206,921.39, 310,300.07 and 71,945.21

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Solution

The fourth proportional to 206,921.39, 310,300.07 and 71,945.21 is: 107,889.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,921.39 : 310,300.07 = 71,945.21 : x
  2. Step 2: Convert to fraction form
    206,921.39/310,300.07 = 71,945.21/x
  3. Step 3: Cross multiply
    206,921.39x = 310,300.07 × 71,945.21
  4. Step 4: Simplify right side
    206,921.39x = 22,324,604,115.19
  5. Step 5: Solve for x
    x = 22,324,604,115.19/206,921.39
  6. Step 6: Final answer
    x = 107,889.30

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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.