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Finding the Fourth Proportional to 168,634.40, 253,243.20 and 89,902.40

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Solution

The fourth proportional to 168,634.40, 253,243.20 and 89,902.40 is: 135,009.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,634.40 : 253,243.20 = 89,902.40 : x
  2. Step 2: Convert to fraction form
    168,634.40/253,243.20 = 89,902.40/x
  3. Step 3: Cross multiply
    168,634.40x = 253,243.20 × 89,902.40
  4. Step 4: Simplify right side
    168,634.40x = 22,767,171,463.68
  5. Step 5: Solve for x
    x = 22,767,171,463.68/168,634.40
  6. Step 6: Final answer
    x = 135,009.06

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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.