Home / 211,939.57-317,896.47-75,169.45

Finding the Fourth Proportional to 211,939.57, 317,896.47 and 75,169.45

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Solution

The fourth proportional to 211,939.57, 317,896.47 and 75,169.45 is: 112,749.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,939.57 : 317,896.47 = 75,169.45 : x
  2. Step 2: Convert to fraction form
    211,939.57/317,896.47 = 75,169.45/x
  3. Step 3: Cross multiply
    211,939.57x = 317,896.47 × 75,169.45
  4. Step 4: Simplify right side
    211,939.57x = 23,896,101,405.28
  5. Step 5: Solve for x
    x = 23,896,101,405.28/211,939.57
  6. Step 6: Final answer
    x = 112,749.60

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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.