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Finding the Fourth Proportional to 170,552.43, 255,719.34 and 70,781.49

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Solution

The fourth proportional to 170,552.43, 255,719.34 and 70,781.49 is: 106,126.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,552.43 : 255,719.34 = 70,781.49 : x
  2. Step 2: Convert to fraction form
    170,552.43/255,719.34 = 70,781.49/x
  3. Step 3: Cross multiply
    170,552.43x = 255,719.34 × 70,781.49
  4. Step 4: Simplify right side
    170,552.43x = 18,100,195,907.02
  5. Step 5: Solve for x
    x = 18,100,195,907.02/170,552.43
  6. Step 6: Final answer
    x = 106,126.87

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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.