Home / 123,327-170,191.26-66,738.78

Finding the Fourth Proportional to 123,327, 170,191.26 and 66,738.78

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Solution

The fourth proportional to 123,327, 170,191.26 and 66,738.78 is: 92,099.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,327 : 170,191.26 = 66,738.78 : x
  2. Step 2: Convert to fraction form
    123,327/170,191.26 = 66,738.78/x
  3. Step 3: Cross multiply
    123,327x = 170,191.26 × 66,738.78
  4. Step 4: Simplify right side
    123,327x = 11,358,357,059.06
  5. Step 5: Solve for x
    x = 11,358,357,059.06/123,327
  6. Step 6: Final answer
    x = 92,099.52

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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.