Finding the Fourth Proportional to 99,211.19, 136,912.92 and 53,890.06
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Solution
The fourth proportional to 99,211.19, 136,912.92 and 53,890.06 is: 74,369.09
Step by Step Solution
- Step 1: Write the proportion equation
99,211.19 : 136,912.92 = 53,890.06 : x - Step 2: Convert to fraction form
99,211.19/136,912.92 = 53,890.06/x - Step 3: Cross multiply
99,211.19x = 136,912.92 × 53,890.06 - Step 4: Simplify right side
99,211.19x = 7,378,245,473.58 - Step 5: Solve for x
x = 7,378,245,473.58/99,211.19 - Step 6: Final answer
x = 74,369.09
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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.