Finding the Fourth Proportional to 136,718.80, 205,078.20 and 121,973.20
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Solution
The fourth proportional to 136,718.80, 205,078.20 and 121,973.20 is: 182,959.80
Step by Step Solution
- Step 1: Write the proportion equation
136,718.80 : 205,078.20 = 121,973.20 : x - Step 2: Convert to fraction form
136,718.80/205,078.20 = 121,973.20/x - Step 3: Cross multiply
136,718.80x = 205,078.20 × 121,973.20 - Step 4: Simplify right side
136,718.80x = 25,014,044,304.24 - Step 5: Solve for x
x = 25,014,044,304.24/136,718.80 - Step 6: Final answer
x = 182,959.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.