Home / 190,980.16-263,453.76-129,729.49

Finding the Fourth Proportional to 190,980.16, 263,453.76 and 129,729.49

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Solution

The fourth proportional to 190,980.16, 263,453.76 and 129,729.49 is: 178,959.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,980.16 : 263,453.76 = 129,729.49 : x
  2. Step 2: Convert to fraction form
    190,980.16/263,453.76 = 129,729.49/x
  3. Step 3: Cross multiply
    190,980.16x = 263,453.76 × 129,729.49
  4. Step 4: Simplify right side
    190,980.16x = 34,177,721,923.38
  5. Step 5: Solve for x
    x = 34,177,721,923.38/190,980.16
  6. Step 6: Final answer
    x = 178,959.54

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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.