Finding the Fourth Proportional to 131,855.96, 181,977.18 and 74,497.70
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Solution
The fourth proportional to 131,855.96, 181,977.18 and 74,497.70 is: 102,815.84
Step by Step Solution
- Step 1: Write the proportion equation
131,855.96 : 181,977.18 = 74,497.70 : x - Step 2: Convert to fraction form
131,855.96/181,977.18 = 74,497.70/x - Step 3: Cross multiply
131,855.96x = 181,977.18 × 74,497.70 - Step 4: Simplify right side
131,855.96x = 13,556,881,362.49 - Step 5: Solve for x
x = 13,556,881,362.49/131,855.96 - Step 6: Final answer
x = 102,815.84
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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.