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Finding the Fourth Proportional to 170,575.74, 255,737.25 and 81,744.66

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Solution

The fourth proportional to 170,575.74, 255,737.25 and 81,744.66 is: 122,556.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,575.74 : 255,737.25 = 81,744.66 : x
  2. Step 2: Convert to fraction form
    170,575.74/255,737.25 = 81,744.66/x
  3. Step 3: Cross multiply
    170,575.74x = 255,737.25 × 81,744.66
  4. Step 4: Simplify right side
    170,575.74x = 20,905,154,550.59
  5. Step 5: Solve for x
    x = 20,905,154,550.59/170,575.74
  6. Step 6: Final answer
    x = 122,556.43

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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.