Finding the Fourth Proportional to 135,414.07, 186,869.12 and 74,983.41
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Solution
The fourth proportional to 135,414.07, 186,869.12 and 74,983.41 is: 103,475.84
Step by Step Solution
- Step 1: Write the proportion equation
135,414.07 : 186,869.12 = 74,983.41 : x - Step 2: Convert to fraction form
135,414.07/186,869.12 = 74,983.41/x - Step 3: Cross multiply
135,414.07x = 186,869.12 × 74,983.41 - Step 4: Simplify right side
135,414.07x = 14,012,084,517.94 - Step 5: Solve for x
x = 14,012,084,517.94/135,414.07 - Step 6: Final answer
x = 103,475.84
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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.