Finding the Fourth Proportional to 129,873.88, 179,224.20 and 72,514.08
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Solution
The fourth proportional to 129,873.88, 179,224.20 and 72,514.08 is: 100,068.45
Step by Step Solution
- Step 1: Write the proportion equation
129,873.88 : 179,224.20 = 72,514.08 : x - Step 2: Convert to fraction form
129,873.88/179,224.20 = 72,514.08/x - Step 3: Cross multiply
129,873.88x = 179,224.20 × 72,514.08 - Step 4: Simplify right side
129,873.88x = 12,996,277,976.74 - Step 5: Solve for x
x = 12,996,277,976.74/129,873.88 - Step 6: Final answer
x = 100,068.45
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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.