Home / 140,115.12-193,363.12-79,694.46

Finding the Fourth Proportional to 140,115.12, 193,363.12 and 79,694.46

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Solution

The fourth proportional to 140,115.12, 193,363.12 and 79,694.46 is: 109,980.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,115.12 : 193,363.12 = 79,694.46 : x
  2. Step 2: Convert to fraction form
    140,115.12/193,363.12 = 79,694.46/x
  3. Step 3: Cross multiply
    140,115.12x = 193,363.12 × 79,694.46
  4. Step 4: Simplify right side
    140,115.12x = 15,409,969,432.32
  5. Step 5: Solve for x
    x = 15,409,969,432.32/140,115.12
  6. Step 6: Final answer
    x = 109,980.77

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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.