Home / 108,198.09-149,311.16-65,770.29

Finding the Fourth Proportional to 108,198.09, 149,311.16 and 65,770.29

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Solution

The fourth proportional to 108,198.09, 149,311.16 and 65,770.29 is: 90,761.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,198.09 : 149,311.16 = 65,770.29 : x
  2. Step 2: Convert to fraction form
    108,198.09/149,311.16 = 65,770.29/x
  3. Step 3: Cross multiply
    108,198.09x = 149,311.16 × 65,770.29
  4. Step 4: Simplify right side
    108,198.09x = 9,820,238,293.44
  5. Step 5: Solve for x
    x = 9,820,238,293.44/108,198.09
  6. Step 6: Final answer
    x = 90,761.66

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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.