Home / 140,115.80-193,364.04-79,695.12

Finding the Fourth Proportional to 140,115.80, 193,364.04 and 79,695.12

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Solution

The fourth proportional to 140,115.80, 193,364.04 and 79,695.12 is: 109,981.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,115.80 : 193,364.04 = 79,695.12 : x
  2. Step 2: Convert to fraction form
    140,115.80/193,364.04 = 79,695.12/x
  3. Step 3: Cross multiply
    140,115.80x = 193,364.04 × 79,695.12
  4. Step 4: Simplify right side
    140,115.80x = 15,410,170,371.48
  5. Step 5: Solve for x
    x = 15,410,170,371.48/140,115.80
  6. Step 6: Final answer
    x = 109,981.68

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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.