Home / 131,940.89-197,961.15-79,387.28

Finding the Fourth Proportional to 131,940.89, 197,961.15 and 79,387.28

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Solution

The fourth proportional to 131,940.89, 197,961.15 and 79,387.28 is: 119,110.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,940.89 : 197,961.15 = 79,387.28 : x
  2. Step 2: Convert to fraction form
    131,940.89/197,961.15 = 79,387.28/x
  3. Step 3: Cross multiply
    131,940.89x = 197,961.15 × 79,387.28
  4. Step 4: Simplify right side
    131,940.89x = 15,715,597,244.17
  5. Step 5: Solve for x
    x = 15,715,597,244.17/131,940.89
  6. Step 6: Final answer
    x = 119,110.89

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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.