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Finding the Fourth Proportional to 171,876.30, 257,814.45 and 72,003.30

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Solution

The fourth proportional to 171,876.30, 257,814.45 and 72,003.30 is: 108,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,876.30 : 257,814.45 = 72,003.30 : x
  2. Step 2: Convert to fraction form
    171,876.30/257,814.45 = 72,003.30/x
  3. Step 3: Cross multiply
    171,876.30x = 257,814.45 × 72,003.30
  4. Step 4: Simplify right side
    171,876.30x = 18,563,491,187.69
  5. Step 5: Solve for x
    x = 18,563,491,187.69/171,876.30
  6. Step 6: Final answer
    x = 108,004.95

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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.