Home / 143,937.20-198,634.20-80,279.10

Finding the Fourth Proportional to 143,937.20, 198,634.20 and 80,279.10

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Solution

The fourth proportional to 143,937.20, 198,634.20 and 80,279.10 is: 110,785.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,937.20 : 198,634.20 = 80,279.10 : x
  2. Step 2: Convert to fraction form
    143,937.20/198,634.20 = 80,279.10/x
  3. Step 3: Cross multiply
    143,937.20x = 198,634.20 × 80,279.10
  4. Step 4: Simplify right side
    143,937.20x = 15,946,174,805.22
  5. Step 5: Solve for x
    x = 15,946,174,805.22/143,937.20
  6. Step 6: Final answer
    x = 110,785.64

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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.