Finding the Fourth Proportional to 128,049.84, 176,715.08 and 71,460.08
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Solution
The fourth proportional to 128,049.84, 176,715.08 and 71,460.08 is: 98,618.43
Step by Step Solution
- Step 1: Write the proportion equation
128,049.84 : 176,715.08 = 71,460.08 : x - Step 2: Convert to fraction form
128,049.84/176,715.08 = 71,460.08/x - Step 3: Cross multiply
128,049.84x = 176,715.08 × 71,460.08 - Step 4: Simplify right side
128,049.84x = 12,628,073,754.01 - Step 5: Solve for x
x = 12,628,073,754.01/128,049.84 - Step 6: Final answer
x = 98,618.43
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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.