Home / 80,111.08-120,173.48-20,946.66

Finding the Fourth Proportional to 80,111.08, 120,173.48 and 20,946.66

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Solution

The fourth proportional to 80,111.08, 120,173.48 and 20,946.66 is: 31,421.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,111.08 : 120,173.48 = 20,946.66 : x
  2. Step 2: Convert to fraction form
    80,111.08/120,173.48 = 20,946.66/x
  3. Step 3: Cross multiply
    80,111.08x = 120,173.48 × 20,946.66
  4. Step 4: Simplify right side
    80,111.08x = 2,517,232,608.66
  5. Step 5: Solve for x
    x = 2,517,232,608.66/80,111.08
  6. Step 6: Final answer
    x = 31,421.78

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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.