Finding the Fourth Proportional to 121,924.97, 168,028.50 and 87,874.60
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Solution
The fourth proportional to 121,924.97, 168,028.50 and 87,874.60 is: 121,102.65
Step by Step Solution
- Step 1: Write the proportion equation
121,924.97 : 168,028.50 = 87,874.60 : x - Step 2: Convert to fraction form
121,924.97/168,028.50 = 87,874.60/x - Step 3: Cross multiply
121,924.97x = 168,028.50 × 87,874.60 - Step 4: Simplify right side
121,924.97x = 14,765,437,135.56 - Step 5: Solve for x
x = 14,765,437,135.56/121,924.97 - Step 6: Final answer
x = 121,102.65
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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.