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Finding the Fourth Proportional to 143,908.20, 215,843.40 and 44,078.40

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Solution

The fourth proportional to 143,908.20, 215,843.40 and 44,078.40 is: 66,111.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,908.20 : 215,843.40 = 44,078.40 : x
  2. Step 2: Convert to fraction form
    143,908.20/215,843.40 = 44,078.40/x
  3. Step 3: Cross multiply
    143,908.20x = 215,843.40 × 44,078.40
  4. Step 4: Simplify right side
    143,908.20x = 9,514,031,722.56
  5. Step 5: Solve for x
    x = 9,514,031,722.56/143,908.20
  6. Step 6: Final answer
    x = 66,111.81

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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.