Finding the Fourth Proportional to 158,538.62, 218,777.49 and 86,917.07
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Solution
The fourth proportional to 158,538.62, 218,777.49 and 86,917.07 is: 119,942.37
Step by Step Solution
- Step 1: Write the proportion equation
158,538.62 : 218,777.49 = 86,917.07 : x - Step 2: Convert to fraction form
158,538.62/218,777.49 = 86,917.07/x - Step 3: Cross multiply
158,538.62x = 218,777.49 × 86,917.07 - Step 4: Simplify right side
158,538.62x = 19,015,498,412.75 - Step 5: Solve for x
x = 19,015,498,412.75/158,538.62 - Step 6: Final answer
x = 119,942.37
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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.