Finding the Fourth Proportional to 128,868.14, 193,315.58 and 44,628.14
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Solution
The fourth proportional to 128,868.14, 193,315.58 and 44,628.14 is: 66,946.84
Step by Step Solution
- Step 1: Write the proportion equation
128,868.14 : 193,315.58 = 44,628.14 : x - Step 2: Convert to fraction form
128,868.14/193,315.58 = 44,628.14/x - Step 3: Cross multiply
128,868.14x = 193,315.58 × 44,628.14 - Step 4: Simplify right side
128,868.14x = 8,627,314,768.42 - Step 5: Solve for x
x = 8,627,314,768.42/128,868.14 - Step 6: Final answer
x = 66,946.84
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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.