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Finding the Fourth Proportional to 206,553.51, 309,572.01 and 88,086.69

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Solution

The fourth proportional to 206,553.51, 309,572.01 and 88,086.69 is: 132,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,553.51 : 309,572.01 = 88,086.69 : x
  2. Step 2: Convert to fraction form
    206,553.51/309,572.01 = 88,086.69/x
  3. Step 3: Cross multiply
    206,553.51x = 309,572.01 × 88,086.69
  4. Step 4: Simplify right side
    206,553.51x = 27,269,173,677.55
  5. Step 5: Solve for x
    x = 27,269,173,677.55/206,553.51
  6. Step 6: Final answer
    x = 132,019.90

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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.