Home / 139,709.07-192,431.23-107,381.87

Finding the Fourth Proportional to 139,709.07, 192,431.23 and 107,381.87

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Solution

The fourth proportional to 139,709.07, 192,431.23 and 107,381.87 is: 147,904.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,709.07 : 192,431.23 = 107,381.87 : x
  2. Step 2: Convert to fraction form
    139,709.07/192,431.23 = 107,381.87/x
  3. Step 3: Cross multiply
    139,709.07x = 192,431.23 × 107,381.87
  4. Step 4: Simplify right side
    139,709.07x = 20,663,624,814.81
  5. Step 5: Solve for x
    x = 20,663,624,814.81/139,709.07
  6. Step 6: Final answer
    x = 147,904.68

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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.