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Finding the Fourth Proportional to 168,982.80, 253,397.40 and 75,440.40

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Solution

The fourth proportional to 168,982.80, 253,397.40 and 75,440.40 is: 113,126.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,982.80 : 253,397.40 = 75,440.40 : x
  2. Step 2: Convert to fraction form
    168,982.80/253,397.40 = 75,440.40/x
  3. Step 3: Cross multiply
    168,982.80x = 253,397.40 × 75,440.40
  4. Step 4: Simplify right side
    168,982.80x = 19,116,401,214.96
  5. Step 5: Solve for x
    x = 19,116,401,214.96/168,982.80
  6. Step 6: Final answer
    x = 113,126.31

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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.