Finding the Fourth Proportional to 121,663.62, 167,883.84 and 69,982.38
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Solution
The fourth proportional to 121,663.62, 167,883.84 and 69,982.38 is: 96,568.81
Step by Step Solution
- Step 1: Write the proportion equation
121,663.62 : 167,883.84 = 69,982.38 : x - Step 2: Convert to fraction form
121,663.62/167,883.84 = 69,982.38/x - Step 3: Cross multiply
121,663.62x = 167,883.84 × 69,982.38 - Step 4: Simplify right side
121,663.62x = 11,748,910,686.74 - Step 5: Solve for x
x = 11,748,910,686.74/121,663.62 - Step 6: Final answer
x = 96,568.81
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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.