Finding the Fourth Proportional to 154,308.19, 212,944.24 and 86,324.84
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Solution
The fourth proportional to 154,308.19, 212,944.24 and 86,324.84 is: 119,127.68
Step by Step Solution
- Step 1: Write the proportion equation
154,308.19 : 212,944.24 = 86,324.84 : x - Step 2: Convert to fraction form
154,308.19/212,944.24 = 86,324.84/x - Step 3: Cross multiply
154,308.19x = 212,944.24 × 86,324.84 - Step 4: Simplify right side
154,308.19x = 18,382,377,288.65 - Step 5: Solve for x
x = 18,382,377,288.65/154,308.19 - Step 6: Final answer
x = 119,127.68
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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.