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Finding the Fourth Proportional to 171,018.68, 256,389.72 and 71,253.96

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Solution

The fourth proportional to 171,018.68, 256,389.72 and 71,253.96 is: 106,823.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,018.68 : 256,389.72 = 71,253.96 : x
  2. Step 2: Convert to fraction form
    171,018.68/256,389.72 = 71,253.96/x
  3. Step 3: Cross multiply
    171,018.68x = 256,389.72 × 71,253.96
  4. Step 4: Simplify right side
    171,018.68x = 18,268,782,853.29
  5. Step 5: Solve for x
    x = 18,268,782,853.29/171,018.68
  6. Step 6: Final answer
    x = 106,823.32

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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.