Home / 123,523.88-170,372.94-78,209.24

Finding the Fourth Proportional to 123,523.88, 170,372.94 and 78,209.24

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Solution

The fourth proportional to 123,523.88, 170,372.94 and 78,209.24 is: 107,871.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,523.88 : 170,372.94 = 78,209.24 : x
  2. Step 2: Convert to fraction form
    123,523.88/170,372.94 = 78,209.24/x
  3. Step 3: Cross multiply
    123,523.88x = 170,372.94 × 78,209.24
  4. Step 4: Simplify right side
    123,523.88x = 13,324,738,153.97
  5. Step 5: Solve for x
    x = 13,324,738,153.97/123,523.88
  6. Step 6: Final answer
    x = 107,871.76

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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.