Finding the Fourth Proportional to 128,912.84, 193,371.74 and 44,675.74
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Solution
The fourth proportional to 128,912.84, 193,371.74 and 44,675.74 is: 67,014.47
Step by Step Solution
- Step 1: Write the proportion equation
128,912.84 : 193,371.74 = 44,675.74 : x - Step 2: Convert to fraction form
128,912.84/193,371.74 = 44,675.74/x - Step 3: Cross multiply
128,912.84x = 193,371.74 × 44,675.74 - Step 4: Simplify right side
128,912.84x = 8,639,025,579.59 - Step 5: Solve for x
x = 8,639,025,579.59/128,912.84 - Step 6: Final answer
x = 67,014.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.