Finding the Fourth Proportional to 121,122.80, 181,684.26 and 54,485.08
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Solution
The fourth proportional to 121,122.80, 181,684.26 and 54,485.08 is: 81,727.65
Step by Step Solution
- Step 1: Write the proportion equation
121,122.80 : 181,684.26 = 54,485.08 : x - Step 2: Convert to fraction form
121,122.80/181,684.26 = 54,485.08/x - Step 3: Cross multiply
121,122.80x = 181,684.26 × 54,485.08 - Step 4: Simplify right side
121,122.80x = 9,899,081,440.84 - Step 5: Solve for x
x = 9,899,081,440.84/121,122.80 - Step 6: Final answer
x = 81,727.65
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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.