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Finding the Fourth Proportional to 143,906.20, 215,859.30 and 108,914.20

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Solution

The fourth proportional to 143,906.20, 215,859.30 and 108,914.20 is: 163,371.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,906.20 : 215,859.30 = 108,914.20 : x
  2. Step 2: Convert to fraction form
    143,906.20/215,859.30 = 108,914.20/x
  3. Step 3: Cross multiply
    143,906.20x = 215,859.30 × 108,914.20
  4. Step 4: Simplify right side
    143,906.20x = 23,510,142,972.06
  5. Step 5: Solve for x
    x = 23,510,142,972.06/143,906.20
  6. Step 6: Final answer
    x = 163,371.30

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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.