Home / 140,115.42-193,363.53-79,694.75

Finding the Fourth Proportional to 140,115.42, 193,363.53 and 79,694.75

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Solution

The fourth proportional to 140,115.42, 193,363.53 and 79,694.75 is: 109,981.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,115.42 : 193,363.53 = 79,694.75 : x
  2. Step 2: Convert to fraction form
    140,115.42/193,363.53 = 79,694.75/x
  3. Step 3: Cross multiply
    140,115.42x = 193,363.53 × 79,694.75
  4. Step 4: Simplify right side
    140,115.42x = 15,410,058,367.02
  5. Step 5: Solve for x
    x = 15,410,058,367.02/140,115.42
  6. Step 6: Final answer
    x = 109,981.17

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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.