Home / 211,800.15-317,761.73-85,375.14

Finding the Fourth Proportional to 211,800.15, 317,761.73 and 85,375.14

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Solution

The fourth proportional to 211,800.15, 317,761.73 and 85,375.14 is: 128,087.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,800.15 : 317,761.73 = 85,375.14 : x
  2. Step 2: Convert to fraction form
    211,800.15/317,761.73 = 85,375.14/x
  3. Step 3: Cross multiply
    211,800.15x = 317,761.73 × 85,375.14
  4. Step 4: Simplify right side
    211,800.15x = 27,128,951,758.52
  5. Step 5: Solve for x
    x = 27,128,951,758.52/211,800.15
  6. Step 6: Final answer
    x = 128,087.50

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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.