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Finding the Fourth Proportional to 100,166.64, 150,193.84 and 68,612.36

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Solution

The fourth proportional to 100,166.64, 150,193.84 and 68,612.36 is: 102,880.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,166.64 : 150,193.84 = 68,612.36 : x
  2. Step 2: Convert to fraction form
    100,166.64/150,193.84 = 68,612.36/x
  3. Step 3: Cross multiply
    100,166.64x = 150,193.84 × 68,612.36
  4. Step 4: Simplify right side
    100,166.64x = 10,305,153,819.86
  5. Step 5: Solve for x
    x = 10,305,153,819.86/100,166.64
  6. Step 6: Final answer
    x = 102,880.10

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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.