Finding the Fourth Proportional to 207,008.42, 285,673.22 and 115,128.99
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Solution
The fourth proportional to 207,008.42, 285,673.22 and 115,128.99 is: 158,878.90
Step by Step Solution
- Step 1: Write the proportion equation
207,008.42 : 285,673.22 = 115,128.99 : x - Step 2: Convert to fraction form
207,008.42/285,673.22 = 115,128.99/x - Step 3: Cross multiply
207,008.42x = 285,673.22 × 115,128.99 - Step 4: Simplify right side
207,008.42x = 32,889,268,713.00 - Step 5: Solve for x
x = 32,889,268,713.00/207,008.42 - Step 6: Final answer
x = 158,878.90
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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.