Home / 205,394.04-308,013.30-80,667

Finding the Fourth Proportional to 205,394.04, 308,013.30 and 80,667

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Solution

The fourth proportional to 205,394.04, 308,013.30 and 80,667 is: 120,969.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,394.04 : 308,013.30 = 80,667 : x
  2. Step 2: Convert to fraction form
    205,394.04/308,013.30 = 80,667/x
  3. Step 3: Cross multiply
    205,394.04x = 308,013.30 × 80,667
  4. Step 4: Simplify right side
    205,394.04x = 24,846,508,871.10
  5. Step 5: Solve for x
    x = 24,846,508,871.10/205,394.04
  6. Step 6: Final answer
    x = 120,969.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.