Finding the Fourth Proportional to 129,709.63, 193,275.04 and 115,560.96
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Solution
The fourth proportional to 129,709.63, 193,275.04 and 115,560.96 is: 172,192.68
Step by Step Solution
- Step 1: Write the proportion equation
129,709.63 : 193,275.04 = 115,560.96 : x - Step 2: Convert to fraction form
129,709.63/193,275.04 = 115,560.96/x - Step 3: Cross multiply
129,709.63x = 193,275.04 × 115,560.96 - Step 4: Simplify right side
129,709.63x = 22,335,049,166.44 - Step 5: Solve for x
x = 22,335,049,166.44/129,709.63 - Step 6: Final answer
x = 172,192.68
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.