Home / 100,342.23-150,218.10-66,979.55

Finding the Fourth Proportional to 100,342.23, 150,218.10 and 66,979.55

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Solution

The fourth proportional to 100,342.23, 150,218.10 and 66,979.55 is: 100,272.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,342.23 : 150,218.10 = 66,979.55 : x
  2. Step 2: Convert to fraction form
    100,342.23/150,218.10 = 66,979.55/x
  3. Step 3: Cross multiply
    100,342.23x = 150,218.10 × 66,979.55
  4. Step 4: Simplify right side
    100,342.23x = 10,061,540,196.86
  5. Step 5: Solve for x
    x = 10,061,540,196.86/100,342.23
  6. Step 6: Final answer
    x = 100,272.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.