Finding the Fourth Proportional to 121,236.68, 167,300.10 and 66,787.07
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Solution
The fourth proportional to 121,236.68, 167,300.10 and 66,787.07 is: 92,162.56
Step by Step Solution
- Step 1: Write the proportion equation
121,236.68 : 167,300.10 = 66,787.07 : x - Step 2: Convert to fraction form
121,236.68/167,300.10 = 66,787.07/x - Step 3: Cross multiply
121,236.68x = 167,300.10 × 66,787.07 - Step 4: Simplify right side
121,236.68x = 11,173,482,653.21 - Step 5: Solve for x
x = 11,173,482,653.21/121,236.68 - Step 6: Final answer
x = 92,162.56
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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.