Finding the Fourth Proportional to 161,583.40, 242,413.56 and 81,424.41
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Solution
The fourth proportional to 161,583.40, 242,413.56 and 81,424.41 is: 122,155.99
Step by Step Solution
- Step 1: Write the proportion equation
161,583.40 : 242,413.56 = 81,424.41 : x - Step 2: Convert to fraction form
161,583.40/242,413.56 = 81,424.41/x - Step 3: Cross multiply
161,583.40x = 242,413.56 × 81,424.41 - Step 4: Simplify right side
161,583.40x = 19,738,379,479.81 - Step 5: Solve for x
x = 19,738,379,479.81/161,583.40 - Step 6: Final answer
x = 122,155.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.