Finding the Fourth Proportional to 131,980.62, 182,131.02 and 74,618.99
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Solution
The fourth proportional to 131,980.62, 182,131.02 and 74,618.99 is: 102,972.94
Step by Step Solution
- Step 1: Write the proportion equation
131,980.62 : 182,131.02 = 74,618.99 : x - Step 2: Convert to fraction form
131,980.62/182,131.02 = 74,618.99/x - Step 3: Cross multiply
131,980.62x = 182,131.02 × 74,618.99 - Step 4: Simplify right side
131,980.62x = 13,590,432,760.07 - Step 5: Solve for x
x = 13,590,432,760.07/131,980.62 - Step 6: Final answer
x = 102,972.94
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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.