Home / 209,725.62-289,441.46-129,200.28

Finding the Fourth Proportional to 209,725.62, 289,441.46 and 129,200.28

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Solution

The fourth proportional to 209,725.62, 289,441.46 and 129,200.28 is: 178,308.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,725.62 : 289,441.46 = 129,200.28 : x
  2. Step 2: Convert to fraction form
    209,725.62/289,441.46 = 129,200.28/x
  3. Step 3: Cross multiply
    209,725.62x = 289,441.46 × 129,200.28
  4. Step 4: Simplify right side
    209,725.62x = 37,395,917,675.61
  5. Step 5: Solve for x
    x = 37,395,917,675.61/209,725.62
  6. Step 6: Final answer
    x = 178,308.77

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1.5x scale

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.