Finding the Fourth Proportional to 121,786.80, 168,081.63 and 68,082.99
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Solution
The fourth proportional to 121,786.80, 168,081.63 and 68,082.99 is: 93,963.38
Step by Step Solution
- Step 1: Write the proportion equation
121,786.80 : 168,081.63 = 68,082.99 : x - Step 2: Convert to fraction form
121,786.80/168,081.63 = 68,082.99/x - Step 3: Cross multiply
121,786.80x = 168,081.63 × 68,082.99 - Step 4: Simplify right side
121,786.80x = 11,443,499,934.47 - Step 5: Solve for x
x = 11,443,499,934.47/121,786.80 - Step 6: Final answer
x = 93,963.38
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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.