Home / 128,651.28-192,982.32-35,156.76

Finding the Fourth Proportional to 128,651.28, 192,982.32 and 35,156.76

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Solution

The fourth proportional to 128,651.28, 192,982.32 and 35,156.76 is: 52,736.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,651.28 : 192,982.32 = 35,156.76 : x
  2. Step 2: Convert to fraction form
    128,651.28/192,982.32 = 35,156.76/x
  3. Step 3: Cross multiply
    128,651.28x = 192,982.32 × 35,156.76
  4. Step 4: Simplify right side
    128,651.28x = 6,784,633,108.48
  5. Step 5: Solve for x
    x = 6,784,633,108.48/128,651.28
  6. Step 6: Final answer
    x = 52,736.62

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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.