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Finding the Fourth Proportional to 143,639.28, 215,361.72 and 50,094

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Solution

The fourth proportional to 143,639.28, 215,361.72 and 50,094 is: 75,107.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,639.28 : 215,361.72 = 50,094 : x
  2. Step 2: Convert to fraction form
    143,639.28/215,361.72 = 50,094/x
  3. Step 3: Cross multiply
    143,639.28x = 215,361.72 × 50,094
  4. Step 4: Simplify right side
    143,639.28x = 10,788,330,001.68
  5. Step 5: Solve for x
    x = 10,788,330,001.68/143,639.28
  6. Step 6: Final answer
    x = 75,107.10

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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.