Finding the Fourth Proportional to 129,201.11, 193,841.08 and 66,065.59
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Solution
The fourth proportional to 129,201.11, 193,841.08 and 66,065.59 is: 99,118.54
Step by Step Solution
- Step 1: Write the proportion equation
129,201.11 : 193,841.08 = 66,065.59 : x - Step 2: Convert to fraction form
129,201.11/193,841.08 = 66,065.59/x - Step 3: Cross multiply
129,201.11x = 193,841.08 × 66,065.59 - Step 4: Simplify right side
129,201.11x = 12,806,225,316.44 - Step 5: Solve for x
x = 12,806,225,316.44/129,201.11 - Step 6: Final answer
x = 99,118.54
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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.