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Finding the Fourth Proportional to 108,907.97, 163,426.14 and 45,739.17

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Solution

The fourth proportional to 108,907.97, 163,426.14 and 45,739.17 is: 68,635.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,907.97 : 163,426.14 = 45,739.17 : x
  2. Step 2: Convert to fraction form
    108,907.97/163,426.14 = 45,739.17/x
  3. Step 3: Cross multiply
    108,907.97x = 163,426.14 × 45,739.17
  4. Step 4: Simplify right side
    108,907.97x = 7,474,975,999.90
  5. Step 5: Solve for x
    x = 7,474,975,999.90/108,907.97
  6. Step 6: Final answer
    x = 68,635.71

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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.