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Finding the Fourth Proportional to 188,615.67, 260,295.08 and 103,738.20

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Solution

The fourth proportional to 188,615.67, 260,295.08 and 103,738.20 is: 143,161.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,615.67 : 260,295.08 = 103,738.20 : x
  2. Step 2: Convert to fraction form
    188,615.67/260,295.08 = 103,738.20/x
  3. Step 3: Cross multiply
    188,615.67x = 260,295.08 × 103,738.20
  4. Step 4: Simplify right side
    188,615.67x = 27,002,542,549.37
  5. Step 5: Solve for x
    x = 27,002,542,549.37/188,615.67
  6. Step 6: Final answer
    x = 143,161.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.