Home / 217,072.37-325,497.49-90,678.12

Finding the Fourth Proportional to 217,072.37, 325,497.49 and 90,678.12

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Solution

The fourth proportional to 217,072.37, 325,497.49 and 90,678.12 is: 135,970.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,072.37 : 325,497.49 = 90,678.12 : x
  2. Step 2: Convert to fraction form
    217,072.37/325,497.49 = 90,678.12/x
  3. Step 3: Cross multiply
    217,072.37x = 325,497.49 × 90,678.12
  4. Step 4: Simplify right side
    217,072.37x = 29,515,500,457.92
  5. Step 5: Solve for x
    x = 29,515,500,457.92/217,072.37
  6. Step 6: Final answer
    x = 135,970.78

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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.