Home / 140,640.30-194,081.97-76,108.04

Finding the Fourth Proportional to 140,640.30, 194,081.97 and 76,108.04

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Solution

The fourth proportional to 140,640.30, 194,081.97 and 76,108.04 is: 105,028.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,640.30 : 194,081.97 = 76,108.04 : x
  2. Step 2: Convert to fraction form
    140,640.30/194,081.97 = 76,108.04/x
  3. Step 3: Cross multiply
    140,640.30x = 194,081.97 × 76,108.04
  4. Step 4: Simplify right side
    140,640.30x = 14,771,198,895.10
  5. Step 5: Solve for x
    x = 14,771,198,895.10/140,640.30
  6. Step 6: Final answer
    x = 105,028.21

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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.