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Finding the Fourth Proportional to 135,213.72, 202,510.03 and 67,538.03

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Solution

The fourth proportional to 135,213.72, 202,510.03 and 67,538.03 is: 101,151.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,213.72 : 202,510.03 = 67,538.03 : x
  2. Step 2: Convert to fraction form
    135,213.72/202,510.03 = 67,538.03/x
  3. Step 3: Cross multiply
    135,213.72x = 202,510.03 × 67,538.03
  4. Step 4: Simplify right side
    135,213.72x = 13,677,128,481.44
  5. Step 5: Solve for x
    x = 13,677,128,481.44/135,213.72
  6. Step 6: Final answer
    x = 101,151.93

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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.