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Finding the Fourth Proportional to 168,485.40, 252,728.10 and 112,498.20

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Solution

The fourth proportional to 168,485.40, 252,728.10 and 112,498.20 is: 168,747.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,485.40 : 252,728.10 = 112,498.20 : x
  2. Step 2: Convert to fraction form
    168,485.40/252,728.10 = 112,498.20/x
  3. Step 3: Cross multiply
    168,485.40x = 252,728.10 × 112,498.20
  4. Step 4: Simplify right side
    168,485.40x = 28,431,456,339.42
  5. Step 5: Solve for x
    x = 28,431,456,339.42/168,485.40
  6. Step 6: Final answer
    x = 168,747.30

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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.