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Finding the Fourth Proportional to 169,219, 253,786.92 and 74,472.94

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Solution

The fourth proportional to 169,219, 253,786.92 and 74,472.94 is: 111,691.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,219 : 253,786.92 = 74,472.94 : x
  2. Step 2: Convert to fraction form
    169,219/253,786.92 = 74,472.94/x
  3. Step 3: Cross multiply
    169,219x = 253,786.92 × 74,472.94
  4. Step 4: Simplify right side
    169,219x = 18,900,258,065.94
  5. Step 5: Solve for x
    x = 18,900,258,065.94/169,219
  6. Step 6: Final answer
    x = 111,691.11

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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.