Home / 213,608.13-320,160.69-87,169.47

Finding the Fourth Proportional to 213,608.13, 320,160.69 and 87,169.47

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Solution

The fourth proportional to 213,608.13, 320,160.69 and 87,169.47 is: 130,651.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,608.13 : 320,160.69 = 87,169.47 : x
  2. Step 2: Convert to fraction form
    213,608.13/320,160.69 = 87,169.47/x
  3. Step 3: Cross multiply
    213,608.13x = 320,160.69 × 87,169.47
  4. Step 4: Simplify right side
    213,608.13x = 27,908,237,662.13
  5. Step 5: Solve for x
    x = 27,908,237,662.13/213,608.13
  6. Step 6: Final answer
    x = 130,651.57

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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.