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Finding the Fourth Proportional to 108,568, 149,849.76 and 63,881.92

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Solution

The fourth proportional to 108,568, 149,849.76 and 63,881.92 is: 88,172.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,568 : 149,849.76 = 63,881.92 : x
  2. Step 2: Convert to fraction form
    108,568/149,849.76 = 63,881.92/x
  3. Step 3: Cross multiply
    108,568x = 149,849.76 × 63,881.92
  4. Step 4: Simplify right side
    108,568x = 9,572,690,380.34
  5. Step 5: Solve for x
    x = 9,572,690,380.34/108,568
  6. Step 6: Final answer
    x = 88,172.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.