Finding the Fourth Proportional to 128,553.57, 177,414.17 and 94,716.63
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Solution
The fourth proportional to 128,553.57, 177,414.17 and 94,716.63 is: 130,716.49
Step by Step Solution
- Step 1: Write the proportion equation
128,553.57 : 177,414.17 = 94,716.63 : x - Step 2: Convert to fraction form
128,553.57/177,414.17 = 94,716.63/x - Step 3: Cross multiply
128,553.57x = 177,414.17 × 94,716.63 - Step 4: Simplify right side
128,553.57x = 16,804,071,823.06 - Step 5: Solve for x
x = 16,804,071,823.06/128,553.57 - Step 6: Final answer
x = 130,716.49
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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.