Home / 128,604.20-192,936.70-53,682.72

Finding the Fourth Proportional to 128,604.20, 192,936.70 and 53,682.72

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Solution

The fourth proportional to 128,604.20, 192,936.70 and 53,682.72 is: 80,536.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,604.20 : 192,936.70 = 53,682.72 : x
  2. Step 2: Convert to fraction form
    128,604.20/192,936.70 = 53,682.72/x
  3. Step 3: Cross multiply
    128,604.20x = 192,936.70 × 53,682.72
  4. Step 4: Simplify right side
    128,604.20x = 10,357,366,843.82
  5. Step 5: Solve for x
    x = 10,357,366,843.82/128,604.20
  6. Step 6: Final answer
    x = 80,536.77

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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.