Finding the Fourth Proportional to 159,413.51, 219,989.18 and 87,791.99
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Solution
The fourth proportional to 159,413.51, 219,989.18 and 87,791.99 is: 121,152.14
Step by Step Solution
- Step 1: Write the proportion equation
159,413.51 : 219,989.18 = 87,791.99 : x - Step 2: Convert to fraction form
159,413.51/219,989.18 = 87,791.99/x - Step 3: Cross multiply
159,413.51x = 219,989.18 × 87,791.99 - Step 4: Simplify right side
159,413.51x = 19,313,287,890.67 - Step 5: Solve for x
x = 19,313,287,890.67/159,413.51 - Step 6: Final answer
x = 121,152.14
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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.