Home / 142,379,865.78-196,491,843.72-79,652,221.74

Finding the Fourth Proportional to 142,379,865.78, 196,491,843.72 and 79,652,221.74

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Solution

The fourth proportional to 142,379,865.78, 196,491,843.72 and 79,652,221.74 is: 109,924,333.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,379,865.78 : 196,491,843.72 = 79,652,221.74 : x
  2. Step 2: Convert to fraction form
    142,379,865.78/196,491,843.72 = 79,652,221.74/x
  3. Step 3: Cross multiply
    142,379,865.78x = 196,491,843.72 × 79,652,221.74
  4. Step 4: Simplify right side
    142,379,865.78x = 15,651,011,906,086,866
  5. Step 5: Solve for x
    x = 15,651,011,906,086,866/142,379,865.78
  6. Step 6: Final answer
    x = 109,924,333.90

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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.