Home / 123,759.09-170,786.17-69,311.75

Finding the Fourth Proportional to 123,759.09, 170,786.17 and 69,311.75

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Solution

The fourth proportional to 123,759.09, 170,786.17 and 69,311.75 is: 95,649.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,759.09 : 170,786.17 = 69,311.75 : x
  2. Step 2: Convert to fraction form
    123,759.09/170,786.17 = 69,311.75/x
  3. Step 3: Cross multiply
    123,759.09x = 170,786.17 × 69,311.75
  4. Step 4: Simplify right side
    123,759.09x = 11,837,488,511.88
  5. Step 5: Solve for x
    x = 11,837,488,511.88/123,759.09
  6. Step 6: Final answer
    x = 95,649.45

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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.