Finding the Fourth Proportional to 149,489.23, 206,296.75 and 81,505.65
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Solution
The fourth proportional to 149,489.23, 206,296.75 and 81,505.65 is: 112,478.68
Step by Step Solution
- Step 1: Write the proportion equation
149,489.23 : 206,296.75 = 81,505.65 : x - Step 2: Convert to fraction form
149,489.23/206,296.75 = 81,505.65/x - Step 3: Cross multiply
149,489.23x = 206,296.75 × 81,505.65 - Step 4: Simplify right side
149,489.23x = 16,814,351,013.62 - Step 5: Solve for x
x = 16,814,351,013.62/149,489.23 - Step 6: Final answer
x = 112,478.68
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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.