Finding the Fourth Proportional to 121,995.57, 168,315.51 and 68,272.05
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Solution
The fourth proportional to 121,995.57, 168,315.51 and 68,272.05 is: 94,193.95
Step by Step Solution
- Step 1: Write the proportion equation
121,995.57 : 168,315.51 = 68,272.05 : x - Step 2: Convert to fraction form
121,995.57/168,315.51 = 68,272.05/x - Step 3: Cross multiply
121,995.57x = 168,315.51 × 68,272.05 - Step 4: Simplify right side
121,995.57x = 11,491,244,914.50 - Step 5: Solve for x
x = 11,491,244,914.50/121,995.57 - Step 6: Final answer
x = 94,193.95
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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.