Home / 123,838.20-170,508.24-109,287.36

Finding the Fourth Proportional to 123,838.20, 170,508.24 and 109,287.36

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Solution

The fourth proportional to 123,838.20, 170,508.24 and 109,287.36 is: 150,473.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,838.20 : 170,508.24 = 109,287.36 : x
  2. Step 2: Convert to fraction form
    123,838.20/170,508.24 = 109,287.36/x
  3. Step 3: Cross multiply
    123,838.20x = 170,508.24 × 109,287.36
  4. Step 4: Simplify right side
    123,838.20x = 18,634,395,407.85
  5. Step 5: Solve for x
    x = 18,634,395,407.85/123,838.20
  6. Step 6: Final answer
    x = 150,473.73

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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.