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Finding the Fourth Proportional to 168,023.20, 251,743.20 and 141,779.20

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Solution

The fourth proportional to 168,023.20, 251,743.20 and 141,779.20 is: 212,422.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,023.20 : 251,743.20 = 141,779.20 : x
  2. Step 2: Convert to fraction form
    168,023.20/251,743.20 = 141,779.20/x
  3. Step 3: Cross multiply
    168,023.20x = 251,743.20 × 141,779.20
  4. Step 4: Simplify right side
    168,023.20x = 35,691,949,501.44
  5. Step 5: Solve for x
    x = 35,691,949,501.44/168,023.20
  6. Step 6: Final answer
    x = 212,422.75

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1.5x scale

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.