Home / 139,563.13-192,591.25-79,137.84

Finding the Fourth Proportional to 139,563.13, 192,591.25 and 79,137.84

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Solution

The fourth proportional to 139,563.13, 192,591.25 and 79,137.84 is: 109,206.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,563.13 : 192,591.25 = 79,137.84 : x
  2. Step 2: Convert to fraction form
    139,563.13/192,591.25 = 79,137.84/x
  3. Step 3: Cross multiply
    139,563.13x = 192,591.25 × 79,137.84
  4. Step 4: Simplify right side
    139,563.13x = 15,241,255,527.90
  5. Step 5: Solve for x
    x = 15,241,255,527.90/139,563.13
  6. Step 6: Final answer
    x = 109,206.89

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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.