Home / 80,115.06-120,180.83-30,237.15

Finding the Fourth Proportional to 80,115.06, 120,180.83 and 30,237.15

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Solution

The fourth proportional to 80,115.06, 120,180.83 and 30,237.15 is: 45,358.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,115.06 : 120,180.83 = 30,237.15 : x
  2. Step 2: Convert to fraction form
    80,115.06/120,180.83 = 30,237.15/x
  3. Step 3: Cross multiply
    80,115.06x = 120,180.83 × 30,237.15
  4. Step 4: Simplify right side
    80,115.06x = 3,633,925,783.83
  5. Step 5: Solve for x
    x = 3,633,925,783.83/80,115.06
  6. Step 6: Final answer
    x = 45,358.83

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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.