Finding the Fourth Proportional to 106,305.08, 159,493.80 and 66,815.96
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Solution
The fourth proportional to 106,305.08, 159,493.80 and 66,815.96 is: 100,246.68
Step by Step Solution
- Step 1: Write the proportion equation
106,305.08 : 159,493.80 = 66,815.96 : x - Step 2: Convert to fraction form
106,305.08/159,493.80 = 66,815.96/x - Step 3: Cross multiply
106,305.08x = 159,493.80 × 66,815.96 - Step 4: Simplify right side
106,305.08x = 10,656,731,361.05 - Step 5: Solve for x
x = 10,656,731,361.05/106,305.08 - Step 6: Final answer
x = 100,246.68
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.