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Finding the Fourth Proportional to 108,858, 163,287.12 and 43,194

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Solution

The fourth proportional to 108,858, 163,287.12 and 43,194 is: 64,791.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,858 : 163,287.12 = 43,194 : x
  2. Step 2: Convert to fraction form
    108,858/163,287.12 = 43,194/x
  3. Step 3: Cross multiply
    108,858x = 163,287.12 × 43,194
  4. Step 4: Simplify right side
    108,858x = 7,053,023,861.28
  5. Step 5: Solve for x
    x = 7,053,023,861.28/108,858
  6. Step 6: Final answer
    x = 64,791.05

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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.