Finding the Fourth Proportional to 136,207.92, 187,968.60 and 76,591.92
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Solution
The fourth proportional to 136,207.92, 187,968.60 and 76,591.92 is: 105,697.79
Step by Step Solution
- Step 1: Write the proportion equation
136,207.92 : 187,968.60 = 76,591.92 : x - Step 2: Convert to fraction form
136,207.92/187,968.60 = 76,591.92/x - Step 3: Cross multiply
136,207.92x = 187,968.60 × 76,591.92 - Step 4: Simplify right side
136,207.92x = 14,396,875,973.71 - Step 5: Solve for x
x = 14,396,875,973.71/136,207.92 - Step 6: Final answer
x = 105,697.79
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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.