Finding the Fourth Proportional to 131,920.84, 181,911.18 and 84,176.20
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Solution
The fourth proportional to 131,920.84, 181,911.18 and 84,176.20 is: 116,074.09
Step by Step Solution
- Step 1: Write the proportion equation
131,920.84 : 181,911.18 = 84,176.20 : x - Step 2: Convert to fraction form
131,920.84/181,911.18 = 84,176.20/x - Step 3: Cross multiply
131,920.84x = 181,911.18 × 84,176.20 - Step 4: Simplify right side
131,920.84x = 15,312,591,869.92 - Step 5: Solve for x
x = 15,312,591,869.92/131,920.84 - Step 6: Final answer
x = 116,074.09
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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.