Finding the Fourth Proportional to 111,468.91, 153,816.91 and 66,139.09
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Solution
The fourth proportional to 111,468.91, 153,816.91 and 66,139.09 is: 91,265.90
Step by Step Solution
- Step 1: Write the proportion equation
111,468.91 : 153,816.91 = 66,139.09 : x - Step 2: Convert to fraction form
111,468.91/153,816.91 = 66,139.09/x - Step 3: Cross multiply
111,468.91x = 153,816.91 × 66,139.09 - Step 4: Simplify right side
111,468.91x = 10,173,310,454.01 - Step 5: Solve for x
x = 10,173,310,454.01/111,468.91 - Step 6: Final answer
x = 91,265.90
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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.