Finding the Fourth Proportional to 112,215.08, 154,912.92 and 69,787.28
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Solution
The fourth proportional to 112,215.08, 154,912.92 and 69,787.28 is: 96,341.34
Step by Step Solution
- Step 1: Write the proportion equation
112,215.08 : 154,912.92 = 69,787.28 : x - Step 2: Convert to fraction form
112,215.08/154,912.92 = 69,787.28/x - Step 3: Cross multiply
112,215.08x = 154,912.92 × 69,787.28 - Step 4: Simplify right side
112,215.08x = 10,810,951,198.08 - Step 5: Solve for x
x = 10,810,951,198.08/112,215.08 - Step 6: Final answer
x = 96,341.34
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1.5x scale
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.