Finding the Fourth Proportional to 131,981.62, 182,132.40 and 74,619.99
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Solution
The fourth proportional to 131,981.62, 182,132.40 and 74,619.99 is: 102,974.32
Step by Step Solution
- Step 1: Write the proportion equation
131,981.62 : 182,132.40 = 74,619.99 : x - Step 2: Convert to fraction form
131,981.62/182,132.40 = 74,619.99/x - Step 3: Cross multiply
131,981.62x = 182,132.40 × 74,619.99 - Step 4: Simplify right side
131,981.62x = 13,590,717,866.68 - Step 5: Solve for x
x = 13,590,717,866.68/131,981.62 - Step 6: Final answer
x = 102,974.32
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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.