Home / 197,805.85-273,014.35-128,981.23

Finding the Fourth Proportional to 197,805.85, 273,014.35 and 128,981.23

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Solution

The fourth proportional to 197,805.85, 273,014.35 and 128,981.23 is: 178,021.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,805.85 : 273,014.35 = 128,981.23 : x
  2. Step 2: Convert to fraction form
    197,805.85/273,014.35 = 128,981.23/x
  3. Step 3: Cross multiply
    197,805.85x = 273,014.35 × 128,981.23
  4. Step 4: Simplify right side
    197,805.85x = 35,213,725,665.66
  5. Step 5: Solve for x
    x = 35,213,725,665.66/197,805.85
  6. Step 6: Final answer
    x = 178,021.66

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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.