Home / 213,725.79-320,586.26-87,433.83

Finding the Fourth Proportional to 213,725.79, 320,586.26 and 87,433.83

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Solution

The fourth proportional to 213,725.79, 320,586.26 and 87,433.83 is: 131,149.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,725.79 : 320,586.26 = 87,433.83 : x
  2. Step 2: Convert to fraction form
    213,725.79/320,586.26 = 87,433.83/x
  3. Step 3: Cross multiply
    213,725.79x = 320,586.26 × 87,433.83
  4. Step 4: Simplify right side
    213,725.79x = 28,030,084,120.01
  5. Step 5: Solve for x
    x = 28,030,084,120.01/213,725.79
  6. Step 6: Final answer
    x = 131,149.75

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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.