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Finding the Fourth Proportional to 201,729.70, 302,507.06 and 68,574.20

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Solution

The fourth proportional to 201,729.70, 302,507.06 and 68,574.20 is: 102,831.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,729.70 : 302,507.06 = 68,574.20 : x
  2. Step 2: Convert to fraction form
    201,729.70/302,507.06 = 68,574.20/x
  3. Step 3: Cross multiply
    201,729.70x = 302,507.06 × 68,574.20
  4. Step 4: Simplify right side
    201,729.70x = 20,744,179,633.85
  5. Step 5: Solve for x
    x = 20,744,179,633.85/201,729.70
  6. Step 6: Final answer
    x = 102,831.56

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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.