Finding the Fourth Proportional to 117,243.74, 161,804.58 and 66,261.18
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Solution
The fourth proportional to 117,243.74, 161,804.58 and 66,261.18 is: 91,445.07
Step by Step Solution
- Step 1: Write the proportion equation
117,243.74 : 161,804.58 = 66,261.18 : x - Step 2: Convert to fraction form
117,243.74/161,804.58 = 66,261.18/x - Step 3: Cross multiply
117,243.74x = 161,804.58 × 66,261.18 - Step 4: Simplify right side
117,243.74x = 10,721,362,675.67 - Step 5: Solve for x
x = 10,721,362,675.67/117,243.74 - Step 6: Final answer
x = 91,445.07
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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.