Home / 139,716.82-192,441.92-107,389.62

Finding the Fourth Proportional to 139,716.82, 192,441.92 and 107,389.62

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Solution

The fourth proportional to 139,716.82, 192,441.92 and 107,389.62 is: 147,915.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,716.82 : 192,441.92 = 107,389.62 : x
  2. Step 2: Convert to fraction form
    139,716.82/192,441.92 = 107,389.62/x
  3. Step 3: Cross multiply
    139,716.82x = 192,441.92 × 107,389.62
  4. Step 4: Simplify right side
    139,716.82x = 20,666,264,660.87
  5. Step 5: Solve for x
    x = 20,666,264,660.87/139,716.82
  6. Step 6: Final answer
    x = 147,915.37

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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.