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Finding the Fourth Proportional to 168,728.80, 252,801.60 and 79,790.80

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Solution

The fourth proportional to 168,728.80, 252,801.60 and 79,790.80 is: 119,548.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,728.80 : 252,801.60 = 79,790.80 : x
  2. Step 2: Convert to fraction form
    168,728.80/252,801.60 = 79,790.80/x
  3. Step 3: Cross multiply
    168,728.80x = 252,801.60 × 79,790.80
  4. Step 4: Simplify right side
    168,728.80x = 20,171,241,905.28
  5. Step 5: Solve for x
    x = 20,171,241,905.28/168,728.80
  6. Step 6: Final answer
    x = 119,548.30

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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.