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Finding the Fourth Proportional to 188,453.62, 260,126.60 and 120,653.20

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Solution

The fourth proportional to 188,453.62, 260,126.60 and 120,653.20 is: 166,540.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,453.62 : 260,126.60 = 120,653.20 : x
  2. Step 2: Convert to fraction form
    188,453.62/260,126.60 = 120,653.20/x
  3. Step 3: Cross multiply
    188,453.62x = 260,126.60 × 120,653.20
  4. Step 4: Simplify right side
    188,453.62x = 31,385,106,091.85
  5. Step 5: Solve for x
    x = 31,385,106,091.85/188,453.62
  6. Step 6: Final answer
    x = 166,540.21

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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.