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Finding the Fourth Proportional to 135,172.46, 202,737.43 and 85,099.28

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Solution

The fourth proportional to 135,172.46, 202,737.43 and 85,099.28 is: 127,635.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,172.46 : 202,737.43 = 85,099.28 : x
  2. Step 2: Convert to fraction form
    135,172.46/202,737.43 = 85,099.28/x
  3. Step 3: Cross multiply
    135,172.46x = 202,737.43 × 85,099.28
  4. Step 4: Simplify right side
    135,172.46x = 17,252,808,414.74
  5. Step 5: Solve for x
    x = 17,252,808,414.74/135,172.46
  6. Step 6: Final answer
    x = 127,635.53

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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.