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Finding the Fourth Proportional to 170,108.70, 255,167.25 and 81,371.58

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Solution

The fourth proportional to 170,108.70, 255,167.25 and 81,371.58 is: 122,059.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,108.70 : 255,167.25 = 81,371.58 : x
  2. Step 2: Convert to fraction form
    170,108.70/255,167.25 = 81,371.58/x
  3. Step 3: Cross multiply
    170,108.70x = 255,167.25 × 81,371.58
  4. Step 4: Simplify right side
    170,108.70x = 20,763,362,296.76
  5. Step 5: Solve for x
    x = 20,763,362,296.76/170,108.70
  6. Step 6: Final answer
    x = 122,059.38

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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.