Home / 213,738.40-320,170.20-108,616.60

Finding the Fourth Proportional to 213,738.40, 320,170.20 and 108,616.60

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Solution

The fourth proportional to 213,738.40, 320,170.20 and 108,616.60 is: 162,702.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,738.40 : 320,170.20 = 108,616.60 : x
  2. Step 2: Convert to fraction form
    213,738.40/320,170.20 = 108,616.60/x
  3. Step 3: Cross multiply
    213,738.40x = 320,170.20 × 108,616.60
  4. Step 4: Simplify right side
    213,738.40x = 34,775,798,545.32
  5. Step 5: Solve for x
    x = 34,775,798,545.32/213,738.40
  6. Step 6: Final answer
    x = 162,702.62

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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.