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Finding the Fourth Proportional to 170,157.25, 255,393.69 and 85,976.54

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Solution

The fourth proportional to 170,157.25, 255,393.69 and 85,976.54 is: 129,044.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,157.25 : 255,393.69 = 85,976.54 : x
  2. Step 2: Convert to fraction form
    170,157.25/255,393.69 = 85,976.54/x
  3. Step 3: Cross multiply
    170,157.25x = 255,393.69 × 85,976.54
  4. Step 4: Simplify right side
    170,157.25x = 21,957,864,527.06
  5. Step 5: Solve for x
    x = 21,957,864,527.06/170,157.25
  6. Step 6: Final answer
    x = 129,044.54

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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.