Finding the Fourth Proportional to 135,413.74, 186,868.67 and 74,983.09
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Solution
The fourth proportional to 135,413.74, 186,868.67 and 74,983.09 is: 103,475.39
Step by Step Solution
- Step 1: Write the proportion equation
135,413.74 : 186,868.67 = 74,983.09 : x - Step 2: Convert to fraction form
135,413.74/186,868.67 = 74,983.09/x - Step 3: Cross multiply
135,413.74x = 186,868.67 × 74,983.09 - Step 4: Simplify right side
135,413.74x = 14,011,989,458.70 - Step 5: Solve for x
x = 14,011,989,458.70/135,413.74 - Step 6: Final answer
x = 103,475.39
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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.