Finding the Fourth Proportional to 121,207.20, 181,897.20 and 68,560.80
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Solution
The fourth proportional to 121,207.20, 181,897.20 and 68,560.80 is: 102,890.07
Step by Step Solution
- Step 1: Write the proportion equation
121,207.20 : 181,897.20 = 68,560.80 : x - Step 2: Convert to fraction form
121,207.20/181,897.20 = 68,560.80/x - Step 3: Cross multiply
121,207.20x = 181,897.20 × 68,560.80 - Step 4: Simplify right side
121,207.20x = 12,471,017,549.76 - Step 5: Solve for x
x = 12,471,017,549.76/121,207.20 - Step 6: Final answer
x = 102,890.07
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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.