Finding the Fourth Proportional to 129,768.40, 194,652.60 and 112,053.70
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Solution
The fourth proportional to 129,768.40, 194,652.60 and 112,053.70 is: 168,080.55
Step by Step Solution
- Step 1: Write the proportion equation
129,768.40 : 194,652.60 = 112,053.70 : x - Step 2: Convert to fraction form
129,768.40/194,652.60 = 112,053.70/x - Step 3: Cross multiply
129,768.40x = 194,652.60 × 112,053.70 - Step 4: Simplify right side
129,768.40x = 21,811,544,044.62 - Step 5: Solve for x
x = 21,811,544,044.62/129,768.40 - Step 6: Final answer
x = 168,080.55
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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.