Finding the Fourth Proportional to 159,565.05, 220,198.68 and 87,945.12
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Solution
The fourth proportional to 159,565.05, 220,198.68 and 87,945.12 is: 121,363.67
Step by Step Solution
- Step 1: Write the proportion equation
159,565.05 : 220,198.68 = 87,945.12 : x - Step 2: Convert to fraction form
159,565.05/220,198.68 = 87,945.12/x - Step 3: Cross multiply
159,565.05x = 220,198.68 × 87,945.12 - Step 4: Simplify right side
159,565.05x = 19,365,399,336.44 - Step 5: Solve for x
x = 19,365,399,336.44/159,565.05 - Step 6: Final answer
x = 121,363.67
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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.