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Finding the Fourth Proportional to 171,943.52, 257,832.32 and 72,076.89

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Solution

The fourth proportional to 171,943.52, 257,832.32 and 72,076.89 is: 108,080.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,943.52 : 257,832.32 = 72,076.89 : x
  2. Step 2: Convert to fraction form
    171,943.52/257,832.32 = 72,076.89/x
  3. Step 3: Cross multiply
    171,943.52x = 257,832.32 × 72,076.89
  4. Step 4: Simplify right side
    171,943.52x = 18,583,751,406.70
  5. Step 5: Solve for x
    x = 18,583,751,406.70/171,943.52
  6. Step 6: Final answer
    x = 108,080.56

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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.