Home / 127,917.63-191,876.91-39,170.78

Finding the Fourth Proportional to 127,917.63, 191,876.91 and 39,170.78

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Solution

The fourth proportional to 127,917.63, 191,876.91 and 39,170.78 is: 58,756.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,917.63 : 191,876.91 = 39,170.78 : x
  2. Step 2: Convert to fraction form
    127,917.63/191,876.91 = 39,170.78/x
  3. Step 3: Cross multiply
    127,917.63x = 191,876.91 × 39,170.78
  4. Step 4: Simplify right side
    127,917.63x = 7,515,967,269.31
  5. Step 5: Solve for x
    x = 7,515,967,269.31/127,917.63
  6. Step 6: Final answer
    x = 58,756.30

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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.