Finding the Fourth Proportional to 127,933.56, 176,782.91 and 121,788.09
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Solution
The fourth proportional to 127,933.56, 176,782.91 and 121,788.09 is: 168,290.89
Step by Step Solution
- Step 1: Write the proportion equation
127,933.56 : 176,782.91 = 121,788.09 : x - Step 2: Convert to fraction form
127,933.56/176,782.91 = 121,788.09/x - Step 3: Cross multiply
127,933.56x = 176,782.91 × 121,788.09 - Step 4: Simplify right side
127,933.56x = 21,530,052,344.60 - Step 5: Solve for x
x = 21,530,052,344.60/127,933.56 - Step 6: Final answer
x = 168,290.89
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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.