Finding the Fourth Proportional to 121,674.24, 167,892.48 and 71,389.44
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Solution
The fourth proportional to 121,674.24, 167,892.48 and 71,389.44 is: 98,506.88
Step by Step Solution
- Step 1: Write the proportion equation
121,674.24 : 167,892.48 = 71,389.44 : x - Step 2: Convert to fraction form
121,674.24/167,892.48 = 71,389.44/x - Step 3: Cross multiply
121,674.24x = 167,892.48 × 71,389.44 - Step 4: Simplify right side
121,674.24x = 11,985,750,127.41 - Step 5: Solve for x
x = 11,985,750,127.41/121,674.24 - Step 6: Final answer
x = 98,506.88
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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.