Home / 109,504.29-151,104.65-80,839.20

Finding the Fourth Proportional to 109,504.29, 151,104.65 and 80,839.20

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Solution

The fourth proportional to 109,504.29, 151,104.65 and 80,839.20 is: 111,549.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,504.29 : 151,104.65 = 80,839.20 : x
  2. Step 2: Convert to fraction form
    109,504.29/151,104.65 = 80,839.20/x
  3. Step 3: Cross multiply
    109,504.29x = 151,104.65 × 80,839.20
  4. Step 4: Simplify right side
    109,504.29x = 12,215,179,022.28
  5. Step 5: Solve for x
    x = 12,215,179,022.28/109,504.29
  6. Step 6: Final answer
    x = 111,549.78

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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.