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Finding the Fourth Proportional to 171,230.76, 256,497.98 and 139,753

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Solution

The fourth proportional to 171,230.76, 256,497.98 and 139,753 is: 209,345.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,230.76 : 256,497.98 = 139,753 : x
  2. Step 2: Convert to fraction form
    171,230.76/256,497.98 = 139,753/x
  3. Step 3: Cross multiply
    171,230.76x = 256,497.98 × 139,753
  4. Step 4: Simplify right side
    171,230.76x = 35,846,362,198.94
  5. Step 5: Solve for x
    x = 35,846,362,198.94/171,230.76
  6. Step 6: Final answer
    x = 209,345.34

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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.