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Finding the Fourth Proportional to 123,363.56, 170,241.56 and 66,774.80

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Solution

The fourth proportional to 123,363.56, 170,241.56 and 66,774.80 is: 92,149.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,363.56 : 170,241.56 = 66,774.80 : x
  2. Step 2: Convert to fraction form
    123,363.56/170,241.56 = 66,774.80/x
  3. Step 3: Cross multiply
    123,363.56x = 170,241.56 × 66,774.80
  4. Step 4: Simplify right side
    123,363.56x = 11,367,846,120.69
  5. Step 5: Solve for x
    x = 11,367,846,120.69/123,363.56
  6. Step 6: Final answer
    x = 92,149.14

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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.