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Finding the Fourth Proportional to 149,771, 206,684.16 and 82,703

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Solution

The fourth proportional to 149,771, 206,684.16 and 82,703 is: 114,130.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,771 : 206,684.16 = 82,703 : x
  2. Step 2: Convert to fraction form
    149,771/206,684.16 = 82,703/x
  3. Step 3: Cross multiply
    149,771x = 206,684.16 × 82,703
  4. Step 4: Simplify right side
    149,771x = 17,093,400,084.48
  5. Step 5: Solve for x
    x = 17,093,400,084.48/149,771
  6. Step 6: Final answer
    x = 114,130.24

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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.