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Finding the Fourth Proportional to 201,607.45, 278,208.20 and 110,961.09

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Solution

The fourth proportional to 201,607.45, 278,208.20 and 110,961.09 is: 153,120.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,607.45 : 278,208.20 = 110,961.09 : x
  2. Step 2: Convert to fraction form
    201,607.45/278,208.20 = 110,961.09/x
  3. Step 3: Cross multiply
    201,607.45x = 278,208.20 × 110,961.09
  4. Step 4: Simplify right side
    201,607.45x = 30,870,285,396.34
  5. Step 5: Solve for x
    x = 30,870,285,396.34/201,607.45
  6. Step 6: Final answer
    x = 153,120.76

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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.