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Finding the Fourth Proportional to 143,997.60, 215,996.40 and 50,512.80

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Solution

The fourth proportional to 143,997.60, 215,996.40 and 50,512.80 is: 75,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,997.60 : 215,996.40 = 50,512.80 : x
  2. Step 2: Convert to fraction form
    143,997.60/215,996.40 = 50,512.80/x
  3. Step 3: Cross multiply
    143,997.60x = 215,996.40 × 50,512.80
  4. Step 4: Simplify right side
    143,997.60x = 10,910,582,953.92
  5. Step 5: Solve for x
    x = 10,910,582,953.92/143,997.60
  6. Step 6: Final answer
    x = 75,769.20

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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.