Finding the Fourth Proportional to 206,807.68, 285,387.06 and 126,369.82
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Solution
The fourth proportional to 206,807.68, 285,387.06 and 126,369.82 is: 174,385.75
Step by Step Solution
- Step 1: Write the proportion equation
206,807.68 : 285,387.06 = 126,369.82 : x - Step 2: Convert to fraction form
206,807.68/285,387.06 = 126,369.82/x - Step 3: Cross multiply
206,807.68x = 285,387.06 × 126,369.82 - Step 4: Simplify right side
206,807.68x = 36,064,311,402.53 - Step 5: Solve for x
x = 36,064,311,402.53/206,807.68 - Step 6: Final answer
x = 174,385.75
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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.