Home / 212,105.69-317,979.14-92,072.43

Finding the Fourth Proportional to 212,105.69, 317,979.14 and 92,072.43

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Solution

The fourth proportional to 212,105.69, 317,979.14 and 92,072.43 is: 138,030.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,105.69 : 317,979.14 = 92,072.43 : x
  2. Step 2: Convert to fraction form
    212,105.69/317,979.14 = 92,072.43/x
  3. Step 3: Cross multiply
    212,105.69x = 317,979.14 × 92,072.43
  4. Step 4: Simplify right side
    212,105.69x = 29,277,111,648.75
  5. Step 5: Solve for x
    x = 29,277,111,648.75/212,105.69
  6. Step 6: Final answer
    x = 138,030.77

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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.