Finding the Fourth Proportional to 112,821.74, 155,688.66 and 67,524.68
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Solution
The fourth proportional to 112,821.74, 155,688.66 and 67,524.68 is: 93,180.86
Step by Step Solution
- Step 1: Write the proportion equation
112,821.74 : 155,688.66 = 67,524.68 : x - Step 2: Convert to fraction form
112,821.74/155,688.66 = 67,524.68/x - Step 3: Cross multiply
112,821.74x = 155,688.66 × 67,524.68 - Step 4: Simplify right side
112,821.74x = 10,512,826,946.13 - Step 5: Solve for x
x = 10,512,826,946.13/112,821.74 - Step 6: Final answer
x = 93,180.86
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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.