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Finding the Fourth Proportional to 104,116.70, 156,128.88 and 47,943.20

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Solution

The fourth proportional to 104,116.70, 156,128.88 and 47,943.20 is: 71,893.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,116.70 : 156,128.88 = 47,943.20 : x
  2. Step 2: Convert to fraction form
    104,116.70/156,128.88 = 47,943.20/x
  3. Step 3: Cross multiply
    104,116.70x = 156,128.88 × 47,943.20
  4. Step 4: Simplify right side
    104,116.70x = 7,485,318,119.62
  5. Step 5: Solve for x
    x = 7,485,318,119.62/104,116.70
  6. Step 6: Final answer
    x = 71,893.54

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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.