Home / 139,769.72-192,882.08-76,107.96

Finding the Fourth Proportional to 139,769.72, 192,882.08 and 76,107.96

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Solution

The fourth proportional to 139,769.72, 192,882.08 and 76,107.96 is: 105,028.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,769.72 : 192,882.08 = 76,107.96 : x
  2. Step 2: Convert to fraction form
    139,769.72/192,882.08 = 76,107.96/x
  3. Step 3: Cross multiply
    139,769.72x = 192,882.08 × 76,107.96
  4. Step 4: Simplify right side
    139,769.72x = 14,679,861,629.36
  5. Step 5: Solve for x
    x = 14,679,861,629.36/139,769.72
  6. Step 6: Final answer
    x = 105,028.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.