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Finding the Fourth Proportional to 123,310.84, 170,169.12 and 66,722.22

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Solution

The fourth proportional to 123,310.84, 170,169.12 and 66,722.22 is: 92,076.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,310.84 : 170,169.12 = 66,722.22 : x
  2. Step 2: Convert to fraction form
    123,310.84/170,169.12 = 66,722.22/x
  3. Step 3: Cross multiply
    123,310.84x = 170,169.12 × 66,722.22
  4. Step 4: Simplify right side
    123,310.84x = 11,354,061,461.85
  5. Step 5: Solve for x
    x = 11,354,061,461.85/123,310.84
  6. Step 6: Final answer
    x = 92,076.75

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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.