Finding the Fourth Proportional to 98,450.80, 147,639.75 and 77,431.75
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Solution
The fourth proportional to 98,450.80, 147,639.75 and 77,431.75 is: 116,118.96
Step by Step Solution
- Step 1: Write the proportion equation
98,450.80 : 147,639.75 = 77,431.75 : x - Step 2: Convert to fraction form
98,450.80/147,639.75 = 77,431.75/x - Step 3: Cross multiply
98,450.80x = 147,639.75 × 77,431.75 - Step 4: Simplify right side
98,450.80x = 11,432,004,212.06 - Step 5: Solve for x
x = 11,432,004,212.06/98,450.80 - Step 6: Final answer
x = 116,118.96
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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.