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Finding the Fourth Proportional to 102,915.44, 154,446.96 and 43,792.64

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Solution

The fourth proportional to 102,915.44, 154,446.96 and 43,792.64 is: 65,720.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,915.44 : 154,446.96 = 43,792.64 : x
  2. Step 2: Convert to fraction form
    102,915.44/154,446.96 = 43,792.64/x
  3. Step 3: Cross multiply
    102,915.44x = 154,446.96 × 43,792.64
  4. Step 4: Simplify right side
    102,915.44x = 6,763,640,118.37
  5. Step 5: Solve for x
    x = 6,763,640,118.37/102,915.44
  6. Step 6: Final answer
    x = 65,720.36

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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.