Home / 139,431.27-192,409.92-75,767.70

Finding the Fourth Proportional to 139,431.27, 192,409.92 and 75,767.70

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Solution

The fourth proportional to 139,431.27, 192,409.92 and 75,767.70 is: 104,556.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,431.27 : 192,409.92 = 75,767.70 : x
  2. Step 2: Convert to fraction form
    139,431.27/192,409.92 = 75,767.70/x
  3. Step 3: Cross multiply
    139,431.27x = 192,409.92 × 75,767.70
  4. Step 4: Simplify right side
    139,431.27x = 14,578,457,095.58
  5. Step 5: Solve for x
    x = 14,578,457,095.58/139,431.27
  6. Step 6: Final answer
    x = 104,556.58

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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.