Home / 142,379,865.29-196,491,843.02-79,652,221.25

Finding the Fourth Proportional to 142,379,865.29, 196,491,843.02 and 79,652,221.25

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Solution

The fourth proportional to 142,379,865.29, 196,491,843.02 and 79,652,221.25 is: 109,924,333.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,379,865.29 : 196,491,843.02 = 79,652,221.25 : x
  2. Step 2: Convert to fraction form
    142,379,865.29/196,491,843.02 = 79,652,221.25/x
  3. Step 3: Cross multiply
    142,379,865.29x = 196,491,843.02 × 79,652,221.25
  4. Step 4: Simplify right side
    142,379,865.29x = 15,651,011,754,049,310
  5. Step 5: Solve for x
    x = 15,651,011,754,049,310/142,379,865.29
  6. Step 6: Final answer
    x = 109,924,333.21

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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.