Finding the Fourth Proportional to 136,639.92, 204,894.19 and 77,459.70
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Solution
The fourth proportional to 136,639.92, 204,894.19 and 77,459.70 is: 116,152.31
Step by Step Solution
- Step 1: Write the proportion equation
136,639.92 : 204,894.19 = 77,459.70 : x - Step 2: Convert to fraction form
136,639.92/204,894.19 = 77,459.70/x - Step 3: Cross multiply
136,639.92x = 204,894.19 × 77,459.70 - Step 4: Simplify right side
136,639.92x = 15,871,042,489.14 - Step 5: Solve for x
x = 15,871,042,489.14/136,639.92 - Step 6: Final answer
x = 116,152.31
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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.