Finding the Fourth Proportional to 121,939.23, 168,282.68 and 68,221.04
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Solution
The fourth proportional to 121,939.23, 168,282.68 and 68,221.04 is: 94,148.69
Step by Step Solution
- Step 1: Write the proportion equation
121,939.23 : 168,282.68 = 68,221.04 : x - Step 2: Convert to fraction form
121,939.23/168,282.68 = 68,221.04/x - Step 3: Cross multiply
121,939.23x = 168,282.68 × 68,221.04 - Step 4: Simplify right side
121,939.23x = 11,480,418,261.07 - Step 5: Solve for x
x = 11,480,418,261.07/121,939.23 - Step 6: Final answer
x = 94,148.69
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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.