Home / 139,405.08-192,380.76-75,743.94

Finding the Fourth Proportional to 139,405.08, 192,380.76 and 75,743.94

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Solution

The fourth proportional to 139,405.08, 192,380.76 and 75,743.94 is: 104,527.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,405.08 : 192,380.76 = 75,743.94 : x
  2. Step 2: Convert to fraction form
    139,405.08/192,380.76 = 75,743.94/x
  3. Step 3: Cross multiply
    139,405.08x = 192,380.76 × 75,743.94
  4. Step 4: Simplify right side
    139,405.08x = 14,571,676,742.59
  5. Step 5: Solve for x
    x = 14,571,676,742.59/139,405.08
  6. Step 6: Final answer
    x = 104,527.59

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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.