Finding the Fourth Proportional to 136,414.62, 188,371.26 and 85,515.08
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Solution
The fourth proportional to 136,414.62, 188,371.26 and 85,515.08 is: 118,085.45
Step by Step Solution
- Step 1: Write the proportion equation
136,414.62 : 188,371.26 = 85,515.08 : x - Step 2: Convert to fraction form
136,414.62/188,371.26 = 85,515.08/x - Step 3: Cross multiply
136,414.62x = 188,371.26 × 85,515.08 - Step 4: Simplify right side
136,414.62x = 16,108,582,426.74 - Step 5: Solve for x
x = 16,108,582,426.74/136,414.62 - Step 6: Final answer
x = 118,085.45
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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.