Home / 211,790.12-317,636.76-126,425

Finding the Fourth Proportional to 211,790.12, 317,636.76 and 126,425

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Solution

The fourth proportional to 211,790.12, 317,636.76 and 126,425 is: 189,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,790.12 : 317,636.76 = 126,425 : x
  2. Step 2: Convert to fraction form
    211,790.12/317,636.76 = 126,425/x
  3. Step 3: Cross multiply
    211,790.12x = 317,636.76 × 126,425
  4. Step 4: Simplify right side
    211,790.12x = 40,157,227,383
  5. Step 5: Solve for x
    x = 40,157,227,383/211,790.12
  6. Step 6: Final answer
    x = 189,608.60

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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.