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Finding the Fourth Proportional to 143,446.60, 214,910.70 and 126,857.80

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Solution

The fourth proportional to 143,446.60, 214,910.70 and 126,857.80 is: 190,057.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,446.60 : 214,910.70 = 126,857.80 : x
  2. Step 2: Convert to fraction form
    143,446.60/214,910.70 = 126,857.80/x
  3. Step 3: Cross multiply
    143,446.60x = 214,910.70 × 126,857.80
  4. Step 4: Simplify right side
    143,446.60x = 27,263,098,598.46
  5. Step 5: Solve for x
    x = 27,263,098,598.46/143,446.60
  6. Step 6: Final answer
    x = 190,057.48

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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.