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Finding the Fourth Proportional to 104,760.60, 156,968.10 and 89,208.60

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Solution

The fourth proportional to 104,760.60, 156,968.10 and 89,208.60 is: 133,665.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,760.60 : 156,968.10 = 89,208.60 : x
  2. Step 2: Convert to fraction form
    104,760.60/156,968.10 = 89,208.60/x
  3. Step 3: Cross multiply
    104,760.60x = 156,968.10 × 89,208.60
  4. Step 4: Simplify right side
    104,760.60x = 14,002,904,445.66
  5. Step 5: Solve for x
    x = 14,002,904,445.66/104,760.60
  6. Step 6: Final answer
    x = 133,665.75

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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.