Finding the Fourth Proportional to 121,133,040.42, 167,162,745.40 and 66,128,896.92
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Solution
The fourth proportional to 121,133,040.42, 167,162,745.40 and 66,128,896.92 is: 91,257,413.51
Step by Step Solution
- Step 1: Write the proportion equation
121,133,040.42 : 167,162,745.40 = 66,128,896.92 : x - Step 2: Convert to fraction form
121,133,040.42/167,162,745.40 = 66,128,896.92/x - Step 3: Cross multiply
121,133,040.42x = 167,162,745.40 × 66,128,896.92 - Step 4: Simplify right side
121,133,040.42x = 11,054,287,959,420,804 - Step 5: Solve for x
x = 11,054,287,959,420,804/121,133,040.42 - Step 6: Final answer
x = 91,257,413.51
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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.