Finding the Fourth Proportional to 106,639.35, 147,156.39 and 66,351.84
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Solution
The fourth proportional to 106,639.35, 147,156.39 and 66,351.84 is: 91,561.86
Step by Step Solution
- Step 1: Write the proportion equation
106,639.35 : 147,156.39 = 66,351.84 : x - Step 2: Convert to fraction form
106,639.35/147,156.39 = 66,351.84/x - Step 3: Cross multiply
106,639.35x = 147,156.39 × 66,351.84 - Step 4: Simplify right side
106,639.35x = 9,764,097,244.26 - Step 5: Solve for x
x = 9,764,097,244.26/106,639.35 - Step 6: Final answer
x = 91,561.86
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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.