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Finding the Fourth Proportional to 171,883.80, 257,825.70 and 72,010.80

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Solution

The fourth proportional to 171,883.80, 257,825.70 and 72,010.80 is: 108,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,883.80 : 257,825.70 = 72,010.80 : x
  2. Step 2: Convert to fraction form
    171,883.80/257,825.70 = 72,010.80/x
  3. Step 3: Cross multiply
    171,883.80x = 257,825.70 × 72,010.80
  4. Step 4: Simplify right side
    171,883.80x = 18,566,234,917.56
  5. Step 5: Solve for x
    x = 18,566,234,917.56/171,883.80
  6. Step 6: Final answer
    x = 108,016.20

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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.