Finding the Fourth Proportional to 128,265.60, 192,592.80 and 98,716.80
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Solution
The fourth proportional to 128,265.60, 192,592.80 and 98,716.80 is: 148,224.82
Step by Step Solution
- Step 1: Write the proportion equation
128,265.60 : 192,592.80 = 98,716.80 : x - Step 2: Convert to fraction form
128,265.60/192,592.80 = 98,716.80/x - Step 3: Cross multiply
128,265.60x = 192,592.80 × 98,716.80 - Step 4: Simplify right side
128,265.60x = 19,012,144,919.04 - Step 5: Solve for x
x = 19,012,144,919.04/128,265.60 - Step 6: Final answer
x = 148,224.82
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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.