Finding the Fourth Proportional to 153,972.36, 212,534.28 and 90,286.92
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Solution
The fourth proportional to 153,972.36, 212,534.28 and 90,286.92 is: 124,626.69
Step by Step Solution
- Step 1: Write the proportion equation
153,972.36 : 212,534.28 = 90,286.92 : x - Step 2: Convert to fraction form
153,972.36/212,534.28 = 90,286.92/x - Step 3: Cross multiply
153,972.36x = 212,534.28 × 90,286.92 - Step 4: Simplify right side
153,972.36x = 19,189,065,535.62 - Step 5: Solve for x
x = 19,189,065,535.62/153,972.36 - Step 6: Final answer
x = 124,626.69
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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.