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Finding the Fourth Proportional to 123,325.16, 170,189.20 and 66,736.56

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Solution

The fourth proportional to 123,325.16, 170,189.20 and 66,736.56 is: 92,096.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,325.16 : 170,189.20 = 66,736.56 : x
  2. Step 2: Convert to fraction form
    123,325.16/170,189.20 = 66,736.56/x
  3. Step 3: Cross multiply
    123,325.16x = 170,189.20 × 66,736.56
  4. Step 4: Simplify right side
    123,325.16x = 11,357,841,757.15
  5. Step 5: Solve for x
    x = 11,357,841,757.15/123,325.16
  6. Step 6: Final answer
    x = 92,096.71

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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.