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Finding the Fourth Proportional to 168,002.60, 252,003.90 and 84,021.80

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Solution

The fourth proportional to 168,002.60, 252,003.90 and 84,021.80 is: 126,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,002.60 : 252,003.90 = 84,021.80 : x
  2. Step 2: Convert to fraction form
    168,002.60/252,003.90 = 84,021.80/x
  3. Step 3: Cross multiply
    168,002.60x = 252,003.90 × 84,021.80
  4. Step 4: Simplify right side
    168,002.60x = 21,173,821,285.02
  5. Step 5: Solve for x
    x = 21,173,821,285.02/168,002.60
  6. Step 6: Final answer
    x = 126,032.70

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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.