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Finding the Fourth Proportional to 143,689.38, 215,633.09 and 50,195.13

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Solution

The fourth proportional to 143,689.38, 215,633.09 and 50,195.13 is: 75,327.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,689.38 : 215,633.09 = 50,195.13 : x
  2. Step 2: Convert to fraction form
    143,689.38/215,633.09 = 50,195.13/x
  3. Step 3: Cross multiply
    143,689.38x = 215,633.09 × 50,195.13
  4. Step 4: Simplify right side
    143,689.38x = 10,823,730,984.85
  5. Step 5: Solve for x
    x = 10,823,730,984.85/143,689.38
  6. Step 6: Final answer
    x = 75,327.29

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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.