Finding the Fourth Proportional to 115,879.18, 159,926.74 and 70,583.68
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Solution
The fourth proportional to 115,879.18, 159,926.74 and 70,583.68 is: 97,413.68
Step by Step Solution
- Step 1: Write the proportion equation
115,879.18 : 159,926.74 = 70,583.68 : x - Step 2: Convert to fraction form
115,879.18/159,926.74 = 70,583.68/x - Step 3: Cross multiply
115,879.18x = 159,926.74 × 70,583.68 - Step 4: Simplify right side
115,879.18x = 11,288,217,839.60 - Step 5: Solve for x
x = 11,288,217,839.60/115,879.18 - Step 6: Final answer
x = 97,413.68
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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.