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Finding the Fourth Proportional to 201,072.80, 301,485.36 and 67,940.48

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Solution

The fourth proportional to 201,072.80, 301,485.36 and 67,940.48 is: 101,868.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,072.80 : 301,485.36 = 67,940.48 : x
  2. Step 2: Convert to fraction form
    201,072.80/301,485.36 = 67,940.48/x
  3. Step 3: Cross multiply
    201,072.80x = 301,485.36 × 67,940.48
  4. Step 4: Simplify right side
    201,072.80x = 20,483,060,071.37
  5. Step 5: Solve for x
    x = 20,483,060,071.37/201,072.80
  6. Step 6: Final answer
    x = 101,868.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.