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Finding the Fourth Proportional to 253,147.68, 379,743.30 and 66,159

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Solution

The fourth proportional to 253,147.68, 379,743.30 and 66,159 is: 99,244.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,147.68 : 379,743.30 = 66,159 : x
  2. Step 2: Convert to fraction form
    253,147.68/379,743.30 = 66,159/x
  3. Step 3: Cross multiply
    253,147.68x = 379,743.30 × 66,159
  4. Step 4: Simplify right side
    253,147.68x = 25,123,436,984.70
  5. Step 5: Solve for x
    x = 25,123,436,984.70/253,147.68
  6. Step 6: Final answer
    x = 99,244.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.