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Finding the Fourth Proportional to 171,009.79, 256,376.26 and 71,244.93

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Solution

The fourth proportional to 171,009.79, 256,376.26 and 71,244.93 is: 106,809.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,009.79 : 256,376.26 = 71,244.93 : x
  2. Step 2: Convert to fraction form
    171,009.79/256,376.26 = 71,244.93/x
  3. Step 3: Cross multiply
    171,009.79x = 256,376.26 × 71,244.93
  4. Step 4: Simplify right side
    171,009.79x = 18,265,508,697.36
  5. Step 5: Solve for x
    x = 18,265,508,697.36/171,009.79
  6. Step 6: Final answer
    x = 106,809.73

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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.