Finding the Fourth Proportional to 129,281.05, 194,101.48 and 66,144.75
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Solution
The fourth proportional to 129,281.05, 194,101.48 and 66,144.75 is: 99,309.17
Step by Step Solution
- Step 1: Write the proportion equation
129,281.05 : 194,101.48 = 66,144.75 : x - Step 2: Convert to fraction form
129,281.05/194,101.48 = 66,144.75/x - Step 3: Cross multiply
129,281.05x = 194,101.48 × 66,144.75 - Step 4: Simplify right side
129,281.05x = 12,838,793,481.83 - Step 5: Solve for x
x = 12,838,793,481.83/129,281.05 - Step 6: Final answer
x = 99,309.17
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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.