Home / 213,789.18-320,776.78-134,009.96

Finding the Fourth Proportional to 213,789.18, 320,776.78 and 134,009.96

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Solution

The fourth proportional to 213,789.18, 320,776.78 and 134,009.96 is: 201,073.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,789.18 : 320,776.78 = 134,009.96 : x
  2. Step 2: Convert to fraction form
    213,789.18/320,776.78 = 134,009.96/x
  3. Step 3: Cross multiply
    213,789.18x = 320,776.78 × 134,009.96
  4. Step 4: Simplify right side
    213,789.18x = 42,987,283,923.65
  5. Step 5: Solve for x
    x = 42,987,283,923.65/213,789.18
  6. Step 6: Final answer
    x = 201,073.24

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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.