Finding the Fourth Proportional to 123,489.62, 170,415.84 and 66,900.99
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Solution
The fourth proportional to 123,489.62, 170,415.84 and 66,900.99 is: 92,323.46
Step by Step Solution
- Step 1: Write the proportion equation
123,489.62 : 170,415.84 = 66,900.99 : x - Step 2: Convert to fraction form
123,489.62/170,415.84 = 66,900.99/x - Step 3: Cross multiply
123,489.62x = 170,415.84 × 66,900.99 - Step 4: Simplify right side
123,489.62x = 11,400,988,073.18 - Step 5: Solve for x
x = 11,400,988,073.18/123,489.62 - Step 6: Final answer
x = 92,323.46
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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.