Finding the Fourth Proportional to 111,988.68, 154,544.38 and 61,687.68
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Solution
The fourth proportional to 111,988.68, 154,544.38 and 61,687.68 is: 85,129.00
Step by Step Solution
- Step 1: Write the proportion equation
111,988.68 : 154,544.38 = 61,687.68 : x - Step 2: Convert to fraction form
111,988.68/154,544.38 = 61,687.68/x - Step 3: Cross multiply
111,988.68x = 154,544.38 × 61,687.68 - Step 4: Simplify right side
111,988.68x = 9,533,484,259.24 - Step 5: Solve for x
x = 9,533,484,259.24/111,988.68 - Step 6: Final answer
x = 85,129.00
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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.