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Finding the Fourth Proportional to 169,220.78, 253,863.21 and 68,026.67

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Solution

The fourth proportional to 169,220.78, 253,863.21 and 68,026.67 is: 102,052.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,220.78 : 253,863.21 = 68,026.67 : x
  2. Step 2: Convert to fraction form
    169,220.78/253,863.21 = 68,026.67/x
  3. Step 3: Cross multiply
    169,220.78x = 253,863.21 × 68,026.67
  4. Step 4: Simplify right side
    169,220.78x = 17,269,468,811.81
  5. Step 5: Solve for x
    x = 17,269,468,811.81/169,220.78
  6. Step 6: Final answer
    x = 102,052.89

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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.