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Finding the Fourth Proportional to 159,218.92, 238,920.64 and 80,339.29

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Solution

The fourth proportional to 159,218.92, 238,920.64 and 80,339.29 is: 120,555.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,218.92 : 238,920.64 = 80,339.29 : x
  2. Step 2: Convert to fraction form
    159,218.92/238,920.64 = 80,339.29/x
  3. Step 3: Cross multiply
    159,218.92x = 238,920.64 × 80,339.29
  4. Step 4: Simplify right side
    159,218.92x = 19,194,715,129.72
  5. Step 5: Solve for x
    x = 19,194,715,129.72/159,218.92
  6. Step 6: Final answer
    x = 120,555.49

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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.