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Finding the Fourth Proportional to 188,686.67, 260,383.32 and 108,161.64

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Solution

The fourth proportional to 188,686.67, 260,383.32 and 108,161.64 is: 149,260.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,686.67 : 260,383.32 = 108,161.64 : x
  2. Step 2: Convert to fraction form
    188,686.67/260,383.32 = 108,161.64/x
  3. Step 3: Cross multiply
    188,686.67x = 260,383.32 × 108,161.64
  4. Step 4: Simplify right side
    188,686.67x = 28,163,486,919.84
  5. Step 5: Solve for x
    x = 28,163,486,919.84/188,686.67
  6. Step 6: Final answer
    x = 149,260.61

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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.