Home / 209,022.86-313,435.34-80,999.04

Finding the Fourth Proportional to 209,022.86, 313,435.34 and 80,999.04

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Solution

The fourth proportional to 209,022.86, 313,435.34 and 80,999.04 is: 121,460.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,022.86 : 313,435.34 = 80,999.04 : x
  2. Step 2: Convert to fraction form
    209,022.86/313,435.34 = 80,999.04/x
  3. Step 3: Cross multiply
    209,022.86x = 313,435.34 × 80,999.04
  4. Step 4: Simplify right side
    209,022.86x = 25,387,961,642.07
  5. Step 5: Solve for x
    x = 25,387,961,642.07/209,022.86
  6. Step 6: Final answer
    x = 121,460.22

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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.