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Finding the Fourth Proportional to 168,930.74, 253,045.10 and 80,254.10

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Solution

The fourth proportional to 168,930.74, 253,045.10 and 80,254.10 is: 120,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,930.74 : 253,045.10 = 80,254.10 : x
  2. Step 2: Convert to fraction form
    168,930.74/253,045.10 = 80,254.10/x
  3. Step 3: Cross multiply
    168,930.74x = 253,045.10 × 80,254.10
  4. Step 4: Simplify right side
    168,930.74x = 20,307,906,759.91
  5. Step 5: Solve for x
    x = 20,307,906,759.91/168,930.74
  6. Step 6: Final answer
    x = 120,214.40

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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.