Finding the Fourth Proportional to 138,728.70, 208,093.05 and 119,701.80
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Solution
The fourth proportional to 138,728.70, 208,093.05 and 119,701.80 is: 179,552.70
Step by Step Solution
- Step 1: Write the proportion equation
138,728.70 : 208,093.05 = 119,701.80 : x - Step 2: Convert to fraction form
138,728.70/208,093.05 = 119,701.80/x - Step 3: Cross multiply
138,728.70x = 208,093.05 × 119,701.80 - Step 4: Simplify right side
138,728.70x = 24,909,112,652.49 - Step 5: Solve for x
x = 24,909,112,652.49/138,728.70 - Step 6: Final answer
x = 179,552.70
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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.