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Finding the Fourth Proportional to 135,871.29, 203,621.61 and 51,586.32

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Solution

The fourth proportional to 135,871.29, 203,621.61 and 51,586.32 is: 77,309.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,871.29 : 203,621.61 = 51,586.32 : x
  2. Step 2: Convert to fraction form
    135,871.29/203,621.61 = 51,586.32/x
  3. Step 3: Cross multiply
    135,871.29x = 203,621.61 × 51,586.32
  4. Step 4: Simplify right side
    135,871.29x = 10,504,089,532.38
  5. Step 5: Solve for x
    x = 10,504,089,532.38/135,871.29
  6. Step 6: Final answer
    x = 77,309.12

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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.