Finding the Fourth Proportional to 206,950.64, 285,695.21 and 135,439.88
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Solution
The fourth proportional to 206,950.64, 285,695.21 and 135,439.88 is: 186,974.67
Step by Step Solution
- Step 1: Write the proportion equation
206,950.64 : 285,695.21 = 135,439.88 : x - Step 2: Convert to fraction form
206,950.64/285,695.21 = 135,439.88/x - Step 3: Cross multiply
206,950.64x = 285,695.21 × 135,439.88 - Step 4: Simplify right side
206,950.64x = 38,694,526,011.81 - Step 5: Solve for x
x = 38,694,526,011.81/206,950.64 - Step 6: Final answer
x = 186,974.67
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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.