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Finding the Fourth Proportional to 171,566.20, 257,450.40 and 71,718.70

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Solution

The fourth proportional to 171,566.20, 257,450.40 and 71,718.70 is: 107,620.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,566.20 : 257,450.40 = 71,718.70 : x
  2. Step 2: Convert to fraction form
    171,566.20/257,450.40 = 71,718.70/x
  3. Step 3: Cross multiply
    171,566.20x = 257,450.40 × 71,718.70
  4. Step 4: Simplify right side
    171,566.20x = 18,464,008,002.48
  5. Step 5: Solve for x
    x = 18,464,008,002.48/171,566.20
  6. Step 6: Final answer
    x = 107,620.31

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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.