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Finding the Fourth Proportional to 143,447.60, 214,912.20 and 126,858.80

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Solution

The fourth proportional to 143,447.60, 214,912.20 and 126,858.80 is: 190,058.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,447.60 : 214,912.20 = 126,858.80 : x
  2. Step 2: Convert to fraction form
    143,447.60/214,912.20 = 126,858.80/x
  3. Step 3: Cross multiply
    143,447.60x = 214,912.20 × 126,858.80
  4. Step 4: Simplify right side
    143,447.60x = 27,263,503,797.36
  5. Step 5: Solve for x
    x = 27,263,503,797.36/143,447.60
  6. Step 6: Final answer
    x = 190,058.97

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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.