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Finding the Fourth Proportional to 159,614.75, 220,278.29 and 87,994.65

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Solution

The fourth proportional to 159,614.75, 220,278.29 and 87,994.65 is: 121,438.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,614.75 : 220,278.29 = 87,994.65 : x
  2. Step 2: Convert to fraction form
    159,614.75/220,278.29 = 87,994.65/x
  3. Step 3: Cross multiply
    159,614.75x = 220,278.29 × 87,994.65
  4. Step 4: Simplify right side
    159,614.75x = 19,383,311,417.22
  5. Step 5: Solve for x
    x = 19,383,311,417.22/159,614.75
  6. Step 6: Final answer
    x = 121,438.09

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1.5x scale

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.