Finding the Fourth Proportional to 131,436.60, 181,382.31 and 74,847.99
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Solution
The fourth proportional to 131,436.60, 181,382.31 and 74,847.99 is: 103,290.11
Step by Step Solution
- Step 1: Write the proportion equation
131,436.60 : 181,382.31 = 74,847.99 : x - Step 2: Convert to fraction form
131,436.60/181,382.31 = 74,847.99/x - Step 3: Cross multiply
131,436.60x = 181,382.31 × 74,847.99 - Step 4: Simplify right side
131,436.60x = 13,576,101,325.06 - Step 5: Solve for x
x = 13,576,101,325.06/131,436.60 - Step 6: Final answer
x = 103,290.11
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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.