Home / 128,244.32-192,105.24-104,636

Finding the Fourth Proportional to 128,244.32, 192,105.24 and 104,636

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Solution

The fourth proportional to 128,244.32, 192,105.24 and 104,636 is: 156,740.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,244.32 : 192,105.24 = 104,636 : x
  2. Step 2: Convert to fraction form
    128,244.32/192,105.24 = 104,636/x
  3. Step 3: Cross multiply
    128,244.32x = 192,105.24 × 104,636
  4. Step 4: Simplify right side
    128,244.32x = 20,101,123,892.64
  5. Step 5: Solve for x
    x = 20,101,123,892.64/128,244.32
  6. Step 6: Final answer
    x = 156,740.85

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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.