Home / 127,696.50-175,927.75-100,829.21

Finding the Fourth Proportional to 127,696.50, 175,927.75 and 100,829.21

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Solution

The fourth proportional to 127,696.50, 175,927.75 and 100,829.21 is: 138,912.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,696.50 : 175,927.75 = 100,829.21 : x
  2. Step 2: Convert to fraction form
    127,696.50/175,927.75 = 100,829.21/x
  3. Step 3: Cross multiply
    127,696.50x = 175,927.75 × 100,829.21
  4. Step 4: Simplify right side
    127,696.50x = 17,738,654,917.87
  5. Step 5: Solve for x
    x = 17,738,654,917.87/127,696.50
  6. Step 6: Final answer
    x = 138,912.62

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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.