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Finding the Fourth Proportional to 169,285.71, 253,709.87 and 80,566.41

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Solution

The fourth proportional to 169,285.71, 253,709.87 and 80,566.41 is: 120,745.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,285.71 : 253,709.87 = 80,566.41 : x
  2. Step 2: Convert to fraction form
    169,285.71/253,709.87 = 80,566.41/x
  3. Step 3: Cross multiply
    169,285.71x = 253,709.87 × 80,566.41
  4. Step 4: Simplify right side
    169,285.71x = 20,440,493,004.63
  5. Step 5: Solve for x
    x = 20,440,493,004.63/169,285.71
  6. Step 6: Final answer
    x = 120,745.53

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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.