Home / 211,725.14-317,719.38-131,919.80

Finding the Fourth Proportional to 211,725.14, 317,719.38 and 131,919.80

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Solution

The fourth proportional to 211,725.14, 317,719.38 and 131,919.80 is: 197,961.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,725.14 : 317,719.38 = 131,919.80 : x
  2. Step 2: Convert to fraction form
    211,725.14/317,719.38 = 131,919.80/x
  3. Step 3: Cross multiply
    211,725.14x = 317,719.38 × 131,919.80
  4. Step 4: Simplify right side
    211,725.14x = 41,913,477,065.72
  5. Step 5: Solve for x
    x = 41,913,477,065.72/211,725.14
  6. Step 6: Final answer
    x = 197,961.74

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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.