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Finding the Fourth Proportional to 168,748.20, 252,830.70 and 142,504.20

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Solution

The fourth proportional to 168,748.20, 252,830.70 and 142,504.20 is: 213,510.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,748.20 : 252,830.70 = 142,504.20 : x
  2. Step 2: Convert to fraction form
    168,748.20/252,830.70 = 142,504.20/x
  3. Step 3: Cross multiply
    168,748.20x = 252,830.70 × 142,504.20
  4. Step 4: Simplify right side
    168,748.20x = 36,029,436,638.94
  5. Step 5: Solve for x
    x = 36,029,436,638.94/168,748.20
  6. Step 6: Final answer
    x = 213,510.05

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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.