Home / 123,382.61-170,296.11-80,286.15

Finding the Fourth Proportional to 123,382.61, 170,296.11 and 80,286.15

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Solution

The fourth proportional to 123,382.61, 170,296.11 and 80,286.15 is: 110,813.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,382.61 : 170,296.11 = 80,286.15 : x
  2. Step 2: Convert to fraction form
    123,382.61/170,296.11 = 80,286.15/x
  3. Step 3: Cross multiply
    123,382.61x = 170,296.11 × 80,286.15
  4. Step 4: Simplify right side
    123,382.61x = 13,672,419,031.88
  5. Step 5: Solve for x
    x = 13,672,419,031.88/123,382.61
  6. Step 6: Final answer
    x = 110,813.18

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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.