Home / 140,872.20-194,402.74-77,213.96

Finding the Fourth Proportional to 140,872.20, 194,402.74 and 77,213.96

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Solution

The fourth proportional to 140,872.20, 194,402.74 and 77,213.96 is: 106,554.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,872.20 : 194,402.74 = 77,213.96 : x
  2. Step 2: Convert to fraction form
    140,872.20/194,402.74 = 77,213.96/x
  3. Step 3: Cross multiply
    140,872.20x = 194,402.74 × 77,213.96
  4. Step 4: Simplify right side
    140,872.20x = 15,010,605,390.25
  5. Step 5: Solve for x
    x = 15,010,605,390.25/140,872.20
  6. Step 6: Final answer
    x = 106,554.77

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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.