Home / 123,310.35-170,168.43-66,721.72

Finding the Fourth Proportional to 123,310.35, 170,168.43 and 66,721.72

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Solution

The fourth proportional to 123,310.35, 170,168.43 and 66,721.72 is: 92,076.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,310.35 : 170,168.43 = 66,721.72 : x
  2. Step 2: Convert to fraction form
    123,310.35/170,168.43 = 66,721.72/x
  3. Step 3: Cross multiply
    123,310.35x = 170,168.43 × 66,721.72
  4. Step 4: Simplify right side
    123,310.35x = 11,353,930,005.69
  5. Step 5: Solve for x
    x = 11,353,930,005.69/123,310.35
  6. Step 6: Final answer
    x = 92,076.05

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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.