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Finding the Fourth Proportional to 159,301.87, 219,834.84 and 87,680.35

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Solution

The fourth proportional to 159,301.87, 219,834.84 and 87,680.35 is: 120,997.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,301.87 : 219,834.84 = 87,680.35 : x
  2. Step 2: Convert to fraction form
    159,301.87/219,834.84 = 87,680.35/x
  3. Step 3: Cross multiply
    159,301.87x = 219,834.84 × 87,680.35
  4. Step 4: Simplify right side
    159,301.87x = 19,275,195,713.39
  5. Step 5: Solve for x
    x = 19,275,195,713.39/159,301.87
  6. Step 6: Final answer
    x = 120,997.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.