Finding the Fourth Proportional to 123,201.68, 170,016.36 and 69,486.80
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Solution
The fourth proportional to 123,201.68, 170,016.36 and 69,486.80 is: 95,890.68
Step by Step Solution
- Step 1: Write the proportion equation
123,201.68 : 170,016.36 = 69,486.80 : x - Step 2: Convert to fraction form
123,201.68/170,016.36 = 69,486.80/x - Step 3: Cross multiply
123,201.68x = 170,016.36 × 69,486.80 - Step 4: Simplify right side
123,201.68x = 11,813,892,804.05 - Step 5: Solve for x
x = 11,813,892,804.05/123,201.68 - Step 6: Final answer
x = 95,890.68
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.