Finding the Fourth Proportional to 128,413.08, 192,620.34 and 45,307.08
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Solution
The fourth proportional to 128,413.08, 192,620.34 and 45,307.08 is: 67,960.87
Step by Step Solution
- Step 1: Write the proportion equation
128,413.08 : 192,620.34 = 45,307.08 : x - Step 2: Convert to fraction form
128,413.08/192,620.34 = 45,307.08/x - Step 3: Cross multiply
128,413.08x = 192,620.34 × 45,307.08 - Step 4: Simplify right side
128,413.08x = 8,727,065,154.01 - Step 5: Solve for x
x = 8,727,065,154.01/128,413.08 - Step 6: Final answer
x = 67,960.87
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1.5x scale
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.