Home / 140,242.23-193,550.87-78,990.44

Finding the Fourth Proportional to 140,242.23, 193,550.87 and 78,990.44

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Solution

The fourth proportional to 140,242.23, 193,550.87 and 78,990.44 is: 109,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,242.23 : 193,550.87 = 78,990.44 : x
  2. Step 2: Convert to fraction form
    140,242.23/193,550.87 = 78,990.44/x
  3. Step 3: Cross multiply
    140,242.23x = 193,550.87 × 78,990.44
  4. Step 4: Simplify right side
    140,242.23x = 15,288,667,613.40
  5. Step 5: Solve for x
    x = 15,288,667,613.40/140,242.23
  6. Step 6: Final answer
    x = 109,016.15

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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.