Home / 221,039.88-331,323.75-126,065.60

Finding the Fourth Proportional to 221,039.88, 331,323.75 and 126,065.60

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Solution

The fourth proportional to 221,039.88, 331,323.75 and 126,065.60 is: 188,963.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,039.88 : 331,323.75 = 126,065.60 : x
  2. Step 2: Convert to fraction form
    221,039.88/331,323.75 = 126,065.60/x
  3. Step 3: Cross multiply
    221,039.88x = 331,323.75 × 126,065.60
  4. Step 4: Simplify right side
    221,039.88x = 41,768,525,681.38
  5. Step 5: Solve for x
    x = 41,768,525,681.38/221,039.88
  6. Step 6: Final answer
    x = 188,963.75

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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.