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Finding the Fourth Proportional to 188,453.87, 260,126.94 and 120,653.45

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Solution

The fourth proportional to 188,453.87, 260,126.94 and 120,653.45 is: 166,540.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,453.87 : 260,126.94 = 120,653.45 : x
  2. Step 2: Convert to fraction form
    188,453.87/260,126.94 = 120,653.45/x
  3. Step 3: Cross multiply
    188,453.87x = 260,126.94 × 120,653.45
  4. Step 4: Simplify right side
    188,453.87x = 31,385,212,748.94
  5. Step 5: Solve for x
    x = 31,385,212,748.94/188,453.87
  6. Step 6: Final answer
    x = 166,540.56

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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.