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Finding the Fourth Proportional to 170,540.48, 255,696.59 and 81,745.55

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Solution

The fourth proportional to 170,540.48, 255,696.59 and 81,745.55 is: 122,563.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,540.48 : 255,696.59 = 81,745.55 : x
  2. Step 2: Convert to fraction form
    170,540.48/255,696.59 = 81,745.55/x
  3. Step 3: Cross multiply
    170,540.48x = 255,696.59 × 81,745.55
  4. Step 4: Simplify right side
    170,540.48x = 20,902,058,382.67
  5. Step 5: Solve for x
    x = 20,902,058,382.67/170,540.48
  6. Step 6: Final answer
    x = 122,563.62

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1.5x scale

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.