Home / 129,496.20-194,129.10-76,849.80

Finding the Fourth Proportional to 129,496.20, 194,129.10 and 76,849.80

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Solution

The fourth proportional to 129,496.20, 194,129.10 and 76,849.80 is: 115,206.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,496.20 : 194,129.10 = 76,849.80 : x
  2. Step 2: Convert to fraction form
    129,496.20/194,129.10 = 76,849.80/x
  3. Step 3: Cross multiply
    129,496.20x = 194,129.10 × 76,849.80
  4. Step 4: Simplify right side
    129,496.20x = 14,918,782,509.18
  5. Step 5: Solve for x
    x = 14,918,782,509.18/129,496.20
  6. Step 6: Final answer
    x = 115,206.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.