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Finding the Fourth Proportional to 171,636.35, 257,119.36 and 81,550.86

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Solution

The fourth proportional to 171,636.35, 257,119.36 and 81,550.86 is: 122,167.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,636.35 : 257,119.36 = 81,550.86 : x
  2. Step 2: Convert to fraction form
    171,636.35/257,119.36 = 81,550.86/x
  3. Step 3: Cross multiply
    171,636.35x = 257,119.36 × 81,550.86
  4. Step 4: Simplify right side
    171,636.35x = 20,968,304,726.77
  5. Step 5: Solve for x
    x = 20,968,304,726.77/171,636.35
  6. Step 6: Final answer
    x = 122,167.04

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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.