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Finding the Fourth Proportional to 151,091.70, 226,812.15 and 81,107.70

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Solution

The fourth proportional to 151,091.70, 226,812.15 and 81,107.70 is: 121,755.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,091.70 : 226,812.15 = 81,107.70 : x
  2. Step 2: Convert to fraction form
    151,091.70/226,812.15 = 81,107.70/x
  3. Step 3: Cross multiply
    151,091.70x = 226,812.15 × 81,107.70
  4. Step 4: Simplify right side
    151,091.70x = 18,396,211,818.56
  5. Step 5: Solve for x
    x = 18,396,211,818.56/151,091.70
  6. Step 6: Final answer
    x = 121,755.28

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1.5x scale

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.