Home / 101,982.72-140,751.36-80,423.04

Finding the Fourth Proportional to 101,982.72, 140,751.36 and 80,423.04

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Solution

The fourth proportional to 101,982.72, 140,751.36 and 80,423.04 is: 110,995.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,982.72 : 140,751.36 = 80,423.04 : x
  2. Step 2: Convert to fraction form
    101,982.72/140,751.36 = 80,423.04/x
  3. Step 3: Cross multiply
    101,982.72x = 140,751.36 × 80,423.04
  4. Step 4: Simplify right side
    101,982.72x = 11,319,652,255.33
  5. Step 5: Solve for x
    x = 11,319,652,255.33/101,982.72
  6. Step 6: Final answer
    x = 110,995.79

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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.