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Finding the Fourth Proportional to 149,294.88, 206,027.10 and 81,311.96

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Solution

The fourth proportional to 149,294.88, 206,027.10 and 81,311.96 is: 112,210.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,294.88 : 206,027.10 = 81,311.96 : x
  2. Step 2: Convert to fraction form
    149,294.88/206,027.10 = 81,311.96/x
  3. Step 3: Cross multiply
    149,294.88x = 206,027.10 × 81,311.96
  4. Step 4: Simplify right side
    149,294.88x = 16,752,467,314.12
  5. Step 5: Solve for x
    x = 16,752,467,314.12/149,294.88
  6. Step 6: Final answer
    x = 112,210.59

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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.