Home / 129,223.48-193,815.78-82,800.76

Finding the Fourth Proportional to 129,223.48, 193,815.78 and 82,800.76

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Solution

The fourth proportional to 129,223.48, 193,815.78 and 82,800.76 is: 124,188.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,223.48 : 193,815.78 = 82,800.76 : x
  2. Step 2: Convert to fraction form
    129,223.48/193,815.78 = 82,800.76/x
  3. Step 3: Cross multiply
    129,223.48x = 193,815.78 × 82,800.76
  4. Step 4: Simplify right side
    129,223.48x = 16,048,093,883.99
  5. Step 5: Solve for x
    x = 16,048,093,883.99/129,223.48
  6. Step 6: Final answer
    x = 124,188.68

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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.