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Finding the Fourth Proportional to 102,999.33, 154,568.25 and 36,439.20

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Solution

The fourth proportional to 102,999.33, 154,568.25 and 36,439.20 is: 54,683.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,999.33 : 154,568.25 = 36,439.20 : x
  2. Step 2: Convert to fraction form
    102,999.33/154,568.25 = 36,439.20/x
  3. Step 3: Cross multiply
    102,999.33x = 154,568.25 × 36,439.20
  4. Step 4: Simplify right side
    102,999.33x = 5,632,343,375.40
  5. Step 5: Solve for x
    x = 5,632,343,375.40/102,999.33
  6. Step 6: Final answer
    x = 54,683.30

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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.