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Finding the Fourth Proportional to 111,551.56, 167,148.95 and 100,221.53

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Solution

The fourth proportional to 111,551.56, 167,148.95 and 100,221.53 is: 150,172.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,551.56 : 167,148.95 = 100,221.53 : x
  2. Step 2: Convert to fraction form
    111,551.56/167,148.95 = 100,221.53/x
  3. Step 3: Cross multiply
    111,551.56x = 167,148.95 × 100,221.53
  4. Step 4: Simplify right side
    111,551.56x = 16,751,922,170.04
  5. Step 5: Solve for x
    x = 16,751,922,170.04/111,551.56
  6. Step 6: Final answer
    x = 150,172.02

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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.