Home / 209,756.90-289,571.82-142,131.26

Finding the Fourth Proportional to 209,756.90, 289,571.82 and 142,131.26

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Solution

The fourth proportional to 209,756.90, 289,571.82 and 142,131.26 is: 196,213.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,756.90 : 289,571.82 = 142,131.26 : x
  2. Step 2: Convert to fraction form
    209,756.90/289,571.82 = 142,131.26/x
  3. Step 3: Cross multiply
    209,756.90x = 289,571.82 × 142,131.26
  4. Step 4: Simplify right side
    209,756.90x = 41,157,207,637.09
  5. Step 5: Solve for x
    x = 41,157,207,637.09/209,756.90
  6. Step 6: Final answer
    x = 196,213.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.