Home / 127,201.96-190,440.06-100,945

Finding the Fourth Proportional to 127,201.96, 190,440.06 and 100,945

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Solution

The fourth proportional to 127,201.96, 190,440.06 and 100,945 is: 151,129.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,201.96 : 190,440.06 = 100,945 : x
  2. Step 2: Convert to fraction form
    127,201.96/190,440.06 = 100,945/x
  3. Step 3: Cross multiply
    127,201.96x = 190,440.06 × 100,945
  4. Step 4: Simplify right side
    127,201.96x = 19,223,971,856.70
  5. Step 5: Solve for x
    x = 19,223,971,856.70/127,201.96
  6. Step 6: Final answer
    x = 151,129.53

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1.5x scale

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.