Home / 211,397.44-317,128.92-71,145.12

Finding the Fourth Proportional to 211,397.44, 317,128.92 and 71,145.12

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Solution

The fourth proportional to 211,397.44, 317,128.92 and 71,145.12 is: 106,728.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,397.44 : 317,128.92 = 71,145.12 : x
  2. Step 2: Convert to fraction form
    211,397.44/317,128.92 = 71,145.12/x
  3. Step 3: Cross multiply
    211,397.44x = 317,128.92 × 71,145.12
  4. Step 4: Simplify right side
    211,397.44x = 22,562,175,068.87
  5. Step 5: Solve for x
    x = 22,562,175,068.87/211,397.44
  6. Step 6: Final answer
    x = 106,728.71

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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.