Home / 127,206.72-190,879.20-53,386.56

Finding the Fourth Proportional to 127,206.72, 190,879.20 and 53,386.56

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Solution

The fourth proportional to 127,206.72, 190,879.20 and 53,386.56 is: 80,108.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,206.72 : 190,879.20 = 53,386.56 : x
  2. Step 2: Convert to fraction form
    127,206.72/190,879.20 = 53,386.56/x
  3. Step 3: Cross multiply
    127,206.72x = 190,879.20 × 53,386.56
  4. Step 4: Simplify right side
    127,206.72x = 10,190,383,863.55
  5. Step 5: Solve for x
    x = 10,190,383,863.55/127,206.72
  6. Step 6: Final answer
    x = 80,108.85

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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.