Finding the Fourth Proportional to 99,665.08, 137,538.88 and 54,342.68
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Solution
The fourth proportional to 99,665.08, 137,538.88 and 54,342.68 is: 74,993.48
Step by Step Solution
- Step 1: Write the proportion equation
99,665.08 : 137,538.88 = 54,342.68 : x - Step 2: Convert to fraction form
99,665.08/137,538.88 = 54,342.68/x - Step 3: Cross multiply
99,665.08x = 137,538.88 × 54,342.68 - Step 4: Simplify right side
99,665.08x = 7,474,231,343.40 - Step 5: Solve for x
x = 7,474,231,343.40/99,665.08 - Step 6: Final answer
x = 74,993.48
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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.