Home / 139,769.32-192,882.56-76,107.36

Finding the Fourth Proportional to 139,769.32, 192,882.56 and 76,107.36

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Solution

The fourth proportional to 139,769.32, 192,882.56 and 76,107.36 is: 105,028.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,769.32 : 192,882.56 = 76,107.36 : x
  2. Step 2: Convert to fraction form
    139,769.32/192,882.56 = 76,107.36/x
  3. Step 3: Cross multiply
    139,769.32x = 192,882.56 × 76,107.36
  4. Step 4: Simplify right side
    139,769.32x = 14,679,782,431.64
  5. Step 5: Solve for x
    x = 14,679,782,431.64/139,769.32
  6. Step 6: Final answer
    x = 105,028.65

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1.5x scale

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.