Home / 209,529.44-289,112.32-136,913.12

Finding the Fourth Proportional to 209,529.44, 289,112.32 and 136,913.12

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Solution

The fourth proportional to 209,529.44, 289,112.32 and 136,913.12 is: 188,915.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,529.44 : 289,112.32 = 136,913.12 : x
  2. Step 2: Convert to fraction form
    209,529.44/289,112.32 = 136,913.12/x
  3. Step 3: Cross multiply
    209,529.44x = 289,112.32 × 136,913.12
  4. Step 4: Simplify right side
    209,529.44x = 39,583,269,761.64
  5. Step 5: Solve for x
    x = 39,583,269,761.64/209,529.44
  6. Step 6: Final answer
    x = 188,915.07

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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.