Finding the Fourth Proportional to 121,996.13, 168,355.26 and 68,282.19
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Solution
The fourth proportional to 121,996.13, 168,355.26 and 68,282.19 is: 94,229.76
Step by Step Solution
- Step 1: Write the proportion equation
121,996.13 : 168,355.26 = 68,282.19 : x - Step 2: Convert to fraction form
121,996.13/168,355.26 = 68,282.19/x - Step 3: Cross multiply
121,996.13x = 168,355.26 × 68,282.19 - Step 4: Simplify right side
121,996.13x = 11,495,665,850.82 - Step 5: Solve for x
x = 11,495,665,850.82/121,996.13 - Step 6: Final answer
x = 94,229.76
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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.