Finding the Fourth Proportional to 135,042.26, 186,332.81 and 81,330.75
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Solution
The fourth proportional to 135,042.26, 186,332.81 and 81,330.75 is: 112,221.07
Step by Step Solution
- Step 1: Write the proportion equation
135,042.26 : 186,332.81 = 81,330.75 : x - Step 2: Convert to fraction form
135,042.26/186,332.81 = 81,330.75/x - Step 3: Cross multiply
135,042.26x = 186,332.81 × 81,330.75 - Step 4: Simplify right side
135,042.26x = 15,154,586,780.25 - Step 5: Solve for x
x = 15,154,586,780.25/135,042.26 - Step 6: Final answer
x = 112,221.07
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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.