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Finding the Fourth Proportional to 143,998.60, 215,997.90 and 50,513.80

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Solution

The fourth proportional to 143,998.60, 215,997.90 and 50,513.80 is: 75,770.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,998.60 : 215,997.90 = 50,513.80 : x
  2. Step 2: Convert to fraction form
    143,998.60/215,997.90 = 50,513.80/x
  3. Step 3: Cross multiply
    143,998.60x = 215,997.90 × 50,513.80
  4. Step 4: Simplify right side
    143,998.60x = 10,910,874,721.02
  5. Step 5: Solve for x
    x = 10,910,874,721.02/143,998.60
  6. Step 6: Final answer
    x = 75,770.70

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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.