Finding the Fourth Proportional to 100,286.73, 138,386.88 and 54,963.99
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Solution
The fourth proportional to 100,286.73, 138,386.88 and 54,963.99 is: 75,845.48
Step by Step Solution
- Step 1: Write the proportion equation
100,286.73 : 138,386.88 = 54,963.99 : x - Step 2: Convert to fraction form
100,286.73/138,386.88 = 54,963.99/x - Step 3: Cross multiply
100,286.73x = 138,386.88 × 54,963.99 - Step 4: Simplify right side
100,286.73x = 7,606,295,088.45 - Step 5: Solve for x
x = 7,606,295,088.45/100,286.73 - Step 6: Final answer
x = 75,845.48
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1.5x scale
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.