Finding the Fourth Proportional to 106,450.08, 146,855.84 and 78,106.56
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Solution
The fourth proportional to 106,450.08, 146,855.84 and 78,106.56 is: 107,753.84
Step by Step Solution
- Step 1: Write the proportion equation
106,450.08 : 146,855.84 = 78,106.56 : x - Step 2: Convert to fraction form
106,450.08/146,855.84 = 78,106.56/x - Step 3: Cross multiply
106,450.08x = 146,855.84 × 78,106.56 - Step 4: Simplify right side
106,450.08x = 11,470,404,478.31 - Step 5: Solve for x
x = 11,470,404,478.31/106,450.08 - Step 6: Final answer
x = 107,753.84
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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.