Finding the Fourth Proportional to 121,720.77, 167,882.04 and 104,753.70
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Solution
The fourth proportional to 121,720.77, 167,882.04 and 104,753.70 is: 144,480.39
Step by Step Solution
- Step 1: Write the proportion equation
121,720.77 : 167,882.04 = 104,753.70 : x - Step 2: Convert to fraction form
121,720.77/167,882.04 = 104,753.70/x - Step 3: Cross multiply
121,720.77x = 167,882.04 × 104,753.70 - Step 4: Simplify right side
121,720.77x = 17,586,264,853.55 - Step 5: Solve for x
x = 17,586,264,853.55/121,720.77 - Step 6: Final answer
x = 144,480.39
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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.