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Finding the Fourth Proportional to 171,444.60, 257,058.90 and 71,674.20

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Solution

The fourth proportional to 171,444.60, 257,058.90 and 71,674.20 is: 107,466.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,444.60 : 257,058.90 = 71,674.20 : x
  2. Step 2: Convert to fraction form
    171,444.60/257,058.90 = 71,674.20/x
  3. Step 3: Cross multiply
    171,444.60x = 257,058.90 × 71,674.20
  4. Step 4: Simplify right side
    171,444.60x = 18,424,491,010.38
  5. Step 5: Solve for x
    x = 18,424,491,010.38/171,444.60
  6. Step 6: Final answer
    x = 107,466.15

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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.