Home / 205,272.72-307,952.28-77,189.76

Finding the Fourth Proportional to 205,272.72, 307,952.28 and 77,189.76

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Solution

The fourth proportional to 205,272.72, 307,952.28 and 77,189.76 is: 115,800.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,272.72 : 307,952.28 = 77,189.76 : x
  2. Step 2: Convert to fraction form
    205,272.72/307,952.28 = 77,189.76/x
  3. Step 3: Cross multiply
    205,272.72x = 307,952.28 × 77,189.76
  4. Step 4: Simplify right side
    205,272.72x = 23,770,762,584.65
  5. Step 5: Solve for x
    x = 23,770,762,584.65/205,272.72
  6. Step 6: Final answer
    x = 115,800.88

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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.