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Finding the Fourth Proportional to 140,832.60, 210,860.10 and 109,728.60

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Solution

The fourth proportional to 140,832.60, 210,860.10 and 109,728.60 is: 164,289.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,832.60 : 210,860.10 = 109,728.60 : x
  2. Step 2: Convert to fraction form
    140,832.60/210,860.10 = 109,728.60/x
  3. Step 3: Cross multiply
    140,832.60x = 210,860.10 × 109,728.60
  4. Step 4: Simplify right side
    140,832.60x = 23,137,383,568.86
  5. Step 5: Solve for x
    x = 23,137,383,568.86/140,832.60
  6. Step 6: Final answer
    x = 164,289.97

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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.