Finding the Fourth Proportional to 121,918.08, 168,243.04 and 68,201.94
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Solution
The fourth proportional to 121,918.08, 168,243.04 and 68,201.94 is: 94,116.49
Step by Step Solution
- Step 1: Write the proportion equation
121,918.08 : 168,243.04 = 68,201.94 : x - Step 2: Convert to fraction form
121,918.08/168,243.04 = 68,201.94/x - Step 3: Cross multiply
121,918.08x = 168,243.04 × 68,201.94 - Step 4: Simplify right side
121,918.08x = 11,474,500,707.78 - Step 5: Solve for x
x = 11,474,500,707.78/121,918.08 - Step 6: Final answer
x = 94,116.49
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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.