Finding the Fourth Proportional to 149,397.99, 206,163.98 and 81,413.57
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Solution
The fourth proportional to 149,397.99, 206,163.98 and 81,413.57 is: 112,347.88
Step by Step Solution
- Step 1: Write the proportion equation
149,397.99 : 206,163.98 = 81,413.57 : x - Step 2: Convert to fraction form
149,397.99/206,163.98 = 81,413.57/x - Step 3: Cross multiply
149,397.99x = 206,163.98 × 81,413.57 - Step 4: Simplify right side
149,397.99x = 16,784,546,488.80 - Step 5: Solve for x
x = 16,784,546,488.80/149,397.99 - Step 6: Final answer
x = 112,347.88
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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.