Home / 141,141.16-194,772.90-80,721.64

Finding the Fourth Proportional to 141,141.16, 194,772.90 and 80,721.64

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Solution

The fourth proportional to 141,141.16, 194,772.90 and 80,721.64 is: 111,394.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,141.16 : 194,772.90 = 80,721.64 : x
  2. Step 2: Convert to fraction form
    141,141.16/194,772.90 = 80,721.64/x
  3. Step 3: Cross multiply
    141,141.16x = 194,772.90 × 80,721.64
  4. Step 4: Simplify right side
    141,141.16x = 15,722,387,915.56
  5. Step 5: Solve for x
    x = 15,722,387,915.56/141,141.16
  6. Step 6: Final answer
    x = 111,394.78

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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.