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Finding the Fourth Proportional to 169,474.10, 253,901.32 and 79,351.47

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Solution

The fourth proportional to 169,474.10, 253,901.32 and 79,351.47 is: 118,882.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,474.10 : 253,901.32 = 79,351.47 : x
  2. Step 2: Convert to fraction form
    169,474.10/253,901.32 = 79,351.47/x
  3. Step 3: Cross multiply
    169,474.10x = 253,901.32 × 79,351.47
  4. Step 4: Simplify right side
    169,474.10x = 20,147,442,778.56
  5. Step 5: Solve for x
    x = 20,147,442,778.56/169,474.10
  6. Step 6: Final answer
    x = 118,882.14

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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.