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Finding the Fourth Proportional to 143,371.16, 215,100.48 and 73,299.68

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Solution

The fourth proportional to 143,371.16, 215,100.48 and 73,299.68 is: 109,971.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,371.16 : 215,100.48 = 73,299.68 : x
  2. Step 2: Convert to fraction form
    143,371.16/215,100.48 = 73,299.68/x
  3. Step 3: Cross multiply
    143,371.16x = 215,100.48 × 73,299.68
  4. Step 4: Simplify right side
    143,371.16x = 15,766,794,909.85
  5. Step 5: Solve for x
    x = 15,766,794,909.85/143,371.16
  6. Step 6: Final answer
    x = 109,971.88

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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.