Home / 100,723.28-138,987.23-58,273.88

Finding the Fourth Proportional to 100,723.28, 138,987.23 and 58,273.88

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Solution

The fourth proportional to 100,723.28, 138,987.23 and 58,273.88 is: 80,411.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,723.28 : 138,987.23 = 58,273.88 : x
  2. Step 2: Convert to fraction form
    100,723.28/138,987.23 = 58,273.88/x
  3. Step 3: Cross multiply
    100,723.28x = 138,987.23 × 58,273.88
  4. Step 4: Simplify right side
    100,723.28x = 8,099,324,176.25
  5. Step 5: Solve for x
    x = 8,099,324,176.25/100,723.28
  6. Step 6: Final answer
    x = 80,411.64

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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.