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Finding the Fourth Proportional to 168,603.40, 252,905.10 and 115,459.30

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Solution

The fourth proportional to 168,603.40, 252,905.10 and 115,459.30 is: 173,188.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,603.40 : 252,905.10 = 115,459.30 : x
  2. Step 2: Convert to fraction form
    168,603.40/252,905.10 = 115,459.30/x
  3. Step 3: Cross multiply
    168,603.40x = 252,905.10 × 115,459.30
  4. Step 4: Simplify right side
    168,603.40x = 29,200,245,812.43
  5. Step 5: Solve for x
    x = 29,200,245,812.43/168,603.40
  6. Step 6: Final answer
    x = 173,188.95

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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.