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Finding the Fourth Proportional to 188,120.72, 259,609.76 and 103,245.68

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Solution

The fourth proportional to 188,120.72, 259,609.76 and 103,245.68 is: 142,480.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,120.72 : 259,609.76 = 103,245.68 : x
  2. Step 2: Convert to fraction form
    188,120.72/259,609.76 = 103,245.68/x
  3. Step 3: Cross multiply
    188,120.72x = 259,609.76 × 103,245.68
  4. Step 4: Simplify right side
    188,120.72x = 26,803,586,205.84
  5. Step 5: Solve for x
    x = 26,803,586,205.84/188,120.72
  6. Step 6: Final answer
    x = 142,480.78

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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.