Home / 80,105.58-120,165.21-20,941.16

Finding the Fourth Proportional to 80,105.58, 120,165.21 and 20,941.16

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Solution

The fourth proportional to 80,105.58, 120,165.21 and 20,941.16 is: 31,413.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,105.58 : 120,165.21 = 20,941.16 : x
  2. Step 2: Convert to fraction form
    80,105.58/120,165.21 = 20,941.16/x
  3. Step 3: Cross multiply
    80,105.58x = 120,165.21 × 20,941.16
  4. Step 4: Simplify right side
    80,105.58x = 2,516,398,183.51
  5. Step 5: Solve for x
    x = 2,516,398,183.51/80,105.58
  6. Step 6: Final answer
    x = 31,413.52

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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.