Finding the Fourth Proportional to 121,883.94, 168,207.84 and 68,178.24
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Solution
The fourth proportional to 121,883.94, 168,207.84 and 68,178.24 is: 94,090.45
Step by Step Solution
- Step 1: Write the proportion equation
121,883.94 : 168,207.84 = 68,178.24 : x - Step 2: Convert to fraction form
121,883.94/168,207.84 = 68,178.24/x - Step 3: Cross multiply
121,883.94x = 168,207.84 × 68,178.24 - Step 4: Simplify right side
121,883.94x = 11,468,114,485.40 - Step 5: Solve for x
x = 11,468,114,485.40/121,883.94 - Step 6: Final answer
x = 94,090.45
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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.