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Finding the Fourth Proportional to 169,217.56, 253,819.70 and 69,353.72

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Solution

The fourth proportional to 169,217.56, 253,819.70 and 69,353.72 is: 104,027.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,217.56 : 253,819.70 = 69,353.72 : x
  2. Step 2: Convert to fraction form
    169,217.56/253,819.70 = 69,353.72/x
  3. Step 3: Cross multiply
    169,217.56x = 253,819.70 × 69,353.72
  4. Step 4: Simplify right side
    169,217.56x = 17,603,340,404.28
  5. Step 5: Solve for x
    x = 17,603,340,404.28/169,217.56
  6. Step 6: Final answer
    x = 104,027.86

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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.