Finding the Fourth Proportional to 172,233.62, 257,865.16 and 129,979.42
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Solution
The fourth proportional to 172,233.62, 257,865.16 and 129,979.42 is: 194,602.90
Step by Step Solution
- Step 1: Write the proportion equation
172,233.62 : 257,865.16 = 129,979.42 : x - Step 2: Convert to fraction form
172,233.62/257,865.16 = 129,979.42/x - Step 3: Cross multiply
172,233.62x = 257,865.16 × 129,979.42 - Step 4: Simplify right side
172,233.62x = 33,517,161,995.78 - Step 5: Solve for x
x = 33,517,161,995.78/172,233.62 - Step 6: Final answer
x = 194,602.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.