Home / 170,861.88-256,347.63-82,121.79

Finding the Fourth Proportional to 170,861.88, 256,347.63 and 82,121.79

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Solution

The fourth proportional to 170,861.88, 256,347.63 and 82,121.79 is: 123,209.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,861.88 : 256,347.63 = 82,121.79 : x
  2. Step 2: Convert to fraction form
    170,861.88/256,347.63 = 82,121.79/x
  3. Step 3: Cross multiply
    170,861.88x = 256,347.63 × 82,121.79
  4. Step 4: Simplify right side
    170,861.88x = 21,051,726,237.86
  5. Step 5: Solve for x
    x = 21,051,726,237.86/170,861.88
  6. Step 6: Final answer
    x = 123,209.03

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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.