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Finding the Fourth Proportional to 108,814.20, 163,091.70 and 45,634.20

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Solution

The fourth proportional to 108,814.20, 163,091.70 and 45,634.20 is: 68,396.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,814.20 : 163,091.70 = 45,634.20 : x
  2. Step 2: Convert to fraction form
    108,814.20/163,091.70 = 45,634.20/x
  3. Step 3: Cross multiply
    108,814.20x = 163,091.70 × 45,634.20
  4. Step 4: Simplify right side
    108,814.20x = 7,442,559,256.14
  5. Step 5: Solve for x
    x = 7,442,559,256.14/108,814.20
  6. Step 6: Final answer
    x = 68,396.95

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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.