Finding the Fourth Proportional to 121,933.97, 168,275.42 and 68,215.79
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Solution
The fourth proportional to 121,933.97, 168,275.42 and 68,215.79 is: 94,141.44
Step by Step Solution
- Step 1: Write the proportion equation
121,933.97 : 168,275.42 = 68,215.79 : x - Step 2: Convert to fraction form
121,933.97/168,275.42 = 68,215.79/x - Step 3: Cross multiply
121,933.97x = 168,275.42 × 68,215.79 - Step 4: Simplify right side
121,933.97x = 11,479,039,786.24 - Step 5: Solve for x
x = 11,479,039,786.24/121,933.97 - Step 6: Final answer
x = 94,141.44
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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.