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Finding the Fourth Proportional to 170,640.05, 255,850.71 and 70,869.11

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Solution

The fourth proportional to 170,640.05, 255,850.71 and 70,869.11 is: 106,258.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,640.05 : 255,850.71 = 70,869.11 : x
  2. Step 2: Convert to fraction form
    170,640.05/255,850.71 = 70,869.11/x
  3. Step 3: Cross multiply
    170,640.05x = 255,850.71 × 70,869.11
  4. Step 4: Simplify right side
    170,640.05x = 18,131,912,110.57
  5. Step 5: Solve for x
    x = 18,131,912,110.57/170,640.05
  6. Step 6: Final answer
    x = 106,258.24

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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.