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Finding the Fourth Proportional to 159,554.14, 220,183.65 and 87,934.21

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Solution

The fourth proportional to 159,554.14, 220,183.65 and 87,934.21 is: 121,348.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,554.14 : 220,183.65 = 87,934.21 : x
  2. Step 2: Convert to fraction form
    159,554.14/220,183.65 = 87,934.21/x
  3. Step 3: Cross multiply
    159,554.14x = 220,183.65 × 87,934.21
  4. Step 4: Simplify right side
    159,554.14x = 19,361,674,767.21
  5. Step 5: Solve for x
    x = 19,361,674,767.21/159,554.14
  6. Step 6: Final answer
    x = 121,348.62

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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.