Home / 158,734.92-219,056.90-87,121.61

Finding the Fourth Proportional to 158,734.92, 219,056.90 and 87,121.61

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Solution

The fourth proportional to 158,734.92, 219,056.90 and 87,121.61 is: 120,229.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,734.92 : 219,056.90 = 87,121.61 : x
  2. Step 2: Convert to fraction form
    158,734.92/219,056.90 = 87,121.61/x
  3. Step 3: Cross multiply
    158,734.92x = 219,056.90 × 87,121.61
  4. Step 4: Simplify right side
    158,734.92x = 19,084,588,278.72
  5. Step 5: Solve for x
    x = 19,084,588,278.72/158,734.92
  6. Step 6: Final answer
    x = 120,229.30

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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.