Home / 108,028.68-149,109.03-62,720.85

Finding the Fourth Proportional to 108,028.68, 149,109.03 and 62,720.85

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Solution

The fourth proportional to 108,028.68, 149,109.03 and 62,720.85 is: 86,571.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,028.68 : 149,109.03 = 62,720.85 : x
  2. Step 2: Convert to fraction form
    108,028.68/149,109.03 = 62,720.85/x
  3. Step 3: Cross multiply
    108,028.68x = 149,109.03 × 62,720.85
  4. Step 4: Simplify right side
    108,028.68x = 9,352,245,104.28
  5. Step 5: Solve for x
    x = 9,352,245,104.28/108,028.68
  6. Step 6: Final answer
    x = 86,571.87

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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.