Finding the Fourth Proportional to 142,376.43, 196,473.25 and 77,843.99
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Solution
The fourth proportional to 142,376.43, 196,473.25 and 77,843.99 is: 107,421.29
Step by Step Solution
- Step 1: Write the proportion equation
142,376.43 : 196,473.25 = 77,843.99 : x - Step 2: Convert to fraction form
142,376.43/196,473.25 = 77,843.99/x - Step 3: Cross multiply
142,376.43x = 196,473.25 × 77,843.99 - Step 4: Simplify right side
142,376.43x = 15,294,260,753.72 - Step 5: Solve for x
x = 15,294,260,753.72/142,376.43 - Step 6: Final answer
x = 107,421.29
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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.