Finding the Fourth Proportional to 135,643.20, 203,320.80 and 65,476.80
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Solution
The fourth proportional to 135,643.20, 203,320.80 and 65,476.80 is: 98,145.69
Step by Step Solution
- Step 1: Write the proportion equation
135,643.20 : 203,320.80 = 65,476.80 : x - Step 2: Convert to fraction form
135,643.20/203,320.80 = 65,476.80/x - Step 3: Cross multiply
135,643.20x = 203,320.80 × 65,476.80 - Step 4: Simplify right side
135,643.20x = 13,312,795,357.44 - Step 5: Solve for x
x = 13,312,795,357.44/135,643.20 - Step 6: Final answer
x = 98,145.69
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.