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Finding the Fourth Proportional to 135,211.60, 202,428.60 and 131,323.60

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Solution

The fourth proportional to 135,211.60, 202,428.60 and 131,323.60 is: 196,607.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,211.60 : 202,428.60 = 131,323.60 : x
  2. Step 2: Convert to fraction form
    135,211.60/202,428.60 = 131,323.60/x
  3. Step 3: Cross multiply
    135,211.60x = 202,428.60 × 131,323.60
  4. Step 4: Simplify right side
    135,211.60x = 26,583,652,494.96
  5. Step 5: Solve for x
    x = 26,583,652,494.96/135,211.60
  6. Step 6: Final answer
    x = 196,607.78

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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.