Home / 109,512.30-151,115.69-80,847.21

Finding the Fourth Proportional to 109,512.30, 151,115.69 and 80,847.21

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Solution

The fourth proportional to 109,512.30, 151,115.69 and 80,847.21 is: 111,560.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,512.30 : 151,115.69 = 80,847.21 : x
  2. Step 2: Convert to fraction form
    109,512.30/151,115.69 = 80,847.21/x
  3. Step 3: Cross multiply
    109,512.30x = 151,115.69 × 80,847.21
  4. Step 4: Simplify right side
    109,512.30x = 12,217,281,519.49
  5. Step 5: Solve for x
    x = 12,217,281,519.49/109,512.30
  6. Step 6: Final answer
    x = 111,560.82

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1.5x scale

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.