Home / 211,874.10-317,733.24-85,480.54

Finding the Fourth Proportional to 211,874.10, 317,733.24 and 85,480.54

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Solution

The fourth proportional to 211,874.10, 317,733.24 and 85,480.54 is: 128,189.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,874.10 : 317,733.24 = 85,480.54 : x
  2. Step 2: Convert to fraction form
    211,874.10/317,733.24 = 85,480.54/x
  3. Step 3: Cross multiply
    211,874.10x = 317,733.24 × 85,480.54
  4. Step 4: Simplify right side
    211,874.10x = 27,160,008,931.15
  5. Step 5: Solve for x
    x = 27,160,008,931.15/211,874.10
  6. Step 6: Final answer
    x = 128,189.38

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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.