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Finding the Fourth Proportional to 104,640.56, 156,938.64 and 34,503.20

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Solution

The fourth proportional to 104,640.56, 156,938.64 and 34,503.20 is: 51,747.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,640.56 : 156,938.64 = 34,503.20 : x
  2. Step 2: Convert to fraction form
    104,640.56/156,938.64 = 34,503.20/x
  3. Step 3: Cross multiply
    104,640.56x = 156,938.64 × 34,503.20
  4. Step 4: Simplify right side
    104,640.56x = 5,414,885,283.65
  5. Step 5: Solve for x
    x = 5,414,885,283.65/104,640.56
  6. Step 6: Final answer
    x = 51,747.48

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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.