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Finding the Fourth Proportional to 170,015.88, 255,024.27 and 81,249.21

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Solution

The fourth proportional to 170,015.88, 255,024.27 and 81,249.21 is: 121,874.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,015.88 : 255,024.27 = 81,249.21 : x
  2. Step 2: Convert to fraction form
    170,015.88/255,024.27 = 81,249.21/x
  3. Step 3: Cross multiply
    170,015.88x = 255,024.27 × 81,249.21
  4. Step 4: Simplify right side
    170,015.88x = 20,720,520,468.33
  5. Step 5: Solve for x
    x = 20,720,520,468.33/170,015.88
  6. Step 6: Final answer
    x = 121,874.03

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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.