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Finding the Fourth Proportional to 104,680.40, 155,912.14 and 104,170.64

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Solution

The fourth proportional to 104,680.40, 155,912.14 and 104,170.64 is: 155,152.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,680.40 : 155,912.14 = 104,170.64 : x
  2. Step 2: Convert to fraction form
    104,680.40/155,912.14 = 104,170.64/x
  3. Step 3: Cross multiply
    104,680.40x = 155,912.14 × 104,170.64
  4. Step 4: Simplify right side
    104,680.40x = 16,241,467,407.57
  5. Step 5: Solve for x
    x = 16,241,467,407.57/104,680.40
  6. Step 6: Final answer
    x = 155,152.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.