Home / 140,115.72-193,363.96-79,695.06

Finding the Fourth Proportional to 140,115.72, 193,363.96 and 79,695.06

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Solution

The fourth proportional to 140,115.72, 193,363.96 and 79,695.06 is: 109,981.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,115.72 : 193,363.96 = 79,695.06 : x
  2. Step 2: Convert to fraction form
    140,115.72/193,363.96 = 79,695.06/x
  3. Step 3: Cross multiply
    140,115.72x = 193,363.96 × 79,695.06
  4. Step 4: Simplify right side
    140,115.72x = 15,410,152,194.80
  5. Step 5: Solve for x
    x = 15,410,152,194.80/140,115.72
  6. Step 6: Final answer
    x = 109,981.61

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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.