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Finding the Fourth Proportional to 171,506.22, 257,347.05 and 81,650.46

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Solution

The fourth proportional to 171,506.22, 257,347.05 and 81,650.46 is: 122,517.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,506.22 : 257,347.05 = 81,650.46 : x
  2. Step 2: Convert to fraction form
    171,506.22/257,347.05 = 81,650.46/x
  3. Step 3: Cross multiply
    171,506.22x = 257,347.05 × 81,650.46
  4. Step 4: Simplify right side
    171,506.22x = 21,012,505,012.14
  5. Step 5: Solve for x
    x = 21,012,505,012.14/171,506.22
  6. Step 6: Final answer
    x = 122,517.45

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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.