Finding the Fourth Proportional to 159,749.19, 220,464.59 and 91,788.17
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Solution
The fourth proportional to 159,749.19, 220,464.59 and 91,788.17 is: 126,673.82
Step by Step Solution
- Step 1: Write the proportion equation
159,749.19 : 220,464.59 = 91,788.17 : x - Step 2: Convert to fraction form
159,749.19/220,464.59 = 91,788.17/x - Step 3: Cross multiply
159,749.19x = 220,464.59 × 91,788.17 - Step 4: Simplify right side
159,749.19x = 20,236,040,531.38 - Step 5: Solve for x
x = 20,236,040,531.38/159,749.19 - Step 6: Final answer
x = 126,673.82
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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.