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Finding the Fourth Proportional to 172,847.10, 259,227.45 and 66,207.90

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Solution

The fourth proportional to 172,847.10, 259,227.45 and 66,207.90 is: 99,295.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,847.10 : 259,227.45 = 66,207.90 : x
  2. Step 2: Convert to fraction form
    172,847.10/259,227.45 = 66,207.90/x
  3. Step 3: Cross multiply
    172,847.10x = 259,227.45 × 66,207.90
  4. Step 4: Simplify right side
    172,847.10x = 17,162,905,086.86
  5. Step 5: Solve for x
    x = 17,162,905,086.86/172,847.10
  6. Step 6: Final answer
    x = 99,295.30

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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.