Finding the Fourth Proportional to 157,016.09, 216,691.07 and 85,394.68
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Solution
The fourth proportional to 157,016.09, 216,691.07 and 85,394.68 is: 117,849.47
Step by Step Solution
- Step 1: Write the proportion equation
157,016.09 : 216,691.07 = 85,394.68 : x - Step 2: Convert to fraction form
157,016.09/216,691.07 = 85,394.68/x - Step 3: Cross multiply
157,016.09x = 216,691.07 × 85,394.68 - Step 4: Simplify right side
157,016.09x = 18,504,263,612.81 - Step 5: Solve for x
x = 18,504,263,612.81/157,016.09 - Step 6: Final answer
x = 117,849.47
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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.