Home / 128,126.32-192,195.96-49,212.88

Finding the Fourth Proportional to 128,126.32, 192,195.96 and 49,212.88

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Solution

The fourth proportional to 128,126.32, 192,195.96 and 49,212.88 is: 73,821.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,126.32 : 192,195.96 = 49,212.88 : x
  2. Step 2: Convert to fraction form
    128,126.32/192,195.96 = 49,212.88/x
  3. Step 3: Cross multiply
    128,126.32x = 192,195.96 × 49,212.88
  4. Step 4: Simplify right side
    128,126.32x = 9,458,516,715.96
  5. Step 5: Solve for x
    x = 9,458,516,715.96/128,126.32
  6. Step 6: Final answer
    x = 73,821.81

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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.