Home / 205,943.80-308,915.70-126,801.40

Finding the Fourth Proportional to 205,943.80, 308,915.70 and 126,801.40

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Solution

The fourth proportional to 205,943.80, 308,915.70 and 126,801.40 is: 190,202.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,943.80 : 308,915.70 = 126,801.40 : x
  2. Step 2: Convert to fraction form
    205,943.80/308,915.70 = 126,801.40/x
  3. Step 3: Cross multiply
    205,943.80x = 308,915.70 × 126,801.40
  4. Step 4: Simplify right side
    205,943.80x = 39,170,943,241.98
  5. Step 5: Solve for x
    x = 39,170,943,241.98/205,943.80
  6. Step 6: Final answer
    x = 190,202.10

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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.