Finding the Fourth Proportional to 116,920.40, 161,311.91 and 71,551.08
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Solution
The fourth proportional to 116,920.40, 161,311.91 and 71,551.08 is: 98,717.09
Step by Step Solution
- Step 1: Write the proportion equation
116,920.40 : 161,311.91 = 71,551.08 : x - Step 2: Convert to fraction form
116,920.40/161,311.91 = 71,551.08/x - Step 3: Cross multiply
116,920.40x = 161,311.91 × 71,551.08 - Step 4: Simplify right side
116,920.40x = 11,542,041,019.61 - Step 5: Solve for x
x = 11,542,041,019.61/116,920.40 - Step 6: Final answer
x = 98,717.09
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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.