Home / 205,905.40-308,627.70-87,556.60

Finding the Fourth Proportional to 205,905.40, 308,627.70 and 87,556.60

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Solution

The fourth proportional to 205,905.40, 308,627.70 and 87,556.60 is: 131,236.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,905.40 : 308,627.70 = 87,556.60 : x
  2. Step 2: Convert to fraction form
    205,905.40/308,627.70 = 87,556.60/x
  3. Step 3: Cross multiply
    205,905.40x = 308,627.70 × 87,556.60
  4. Step 4: Simplify right side
    205,905.40x = 27,022,392,077.82
  5. Step 5: Solve for x
    x = 27,022,392,077.82/205,905.40
  6. Step 6: Final answer
    x = 131,236.93

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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.