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Finding the Fourth Proportional to 168,353.40, 252,821.70 and 89,621.40

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Solution

The fourth proportional to 168,353.40, 252,821.70 and 89,621.40 is: 134,587.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,353.40 : 252,821.70 = 89,621.40 : x
  2. Step 2: Convert to fraction form
    168,353.40/252,821.70 = 89,621.40/x
  3. Step 3: Cross multiply
    168,353.40x = 252,821.70 × 89,621.40
  4. Step 4: Simplify right side
    168,353.40x = 22,658,234,704.38
  5. Step 5: Solve for x
    x = 22,658,234,704.38/168,353.40
  6. Step 6: Final answer
    x = 134,587.33

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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.