Home / 209,231.10-313,815.87-68,971.50

Finding the Fourth Proportional to 209,231.10, 313,815.87 and 68,971.50

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Solution

The fourth proportional to 209,231.10, 313,815.87 and 68,971.50 is: 103,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,231.10 : 313,815.87 = 68,971.50 : x
  2. Step 2: Convert to fraction form
    209,231.10/313,815.87 = 68,971.50/x
  3. Step 3: Cross multiply
    209,231.10x = 313,815.87 × 68,971.50
  4. Step 4: Simplify right side
    209,231.10x = 21,644,351,277.71
  5. Step 5: Solve for x
    x = 21,644,351,277.71/209,231.10
  6. Step 6: Final answer
    x = 103,447.10

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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.