Finding the Fourth Proportional to 139,413.06, 192,390.84 and 75,750.84
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Solution
The fourth proportional to 139,413.06, 192,390.84 and 75,750.84 is: 104,536.60
Step by Step Solution
- Step 1: Write the proportion equation
139,413.06 : 192,390.84 = 75,750.84 : x - Step 2: Convert to fraction form
139,413.06/192,390.84 = 75,750.84/x - Step 3: Cross multiply
139,413.06x = 192,390.84 × 75,750.84 - Step 4: Simplify right side
139,413.06x = 14,573,767,738.31 - Step 5: Solve for x
x = 14,573,767,738.31/139,413.06 - Step 6: Final answer
x = 104,536.60
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1.5x scale
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.