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Finding the Fourth Proportional to 171,336.52, 256,835.24 and 81,220.95

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Solution

The fourth proportional to 171,336.52, 256,835.24 and 81,220.95 is: 121,751.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,336.52 : 256,835.24 = 81,220.95 : x
  2. Step 2: Convert to fraction form
    171,336.52/256,835.24 = 81,220.95/x
  3. Step 3: Cross multiply
    171,336.52x = 256,835.24 × 81,220.95
  4. Step 4: Simplify right side
    171,336.52x = 20,860,401,780.17
  5. Step 5: Solve for x
    x = 20,860,401,780.17/171,336.52
  6. Step 6: Final answer
    x = 121,751.06

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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.