Finding the Fourth Proportional to 147,722.20, 221,324.10 and 121,283.80
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Solution
The fourth proportional to 147,722.20, 221,324.10 and 121,283.80 is: 181,712.89
Step by Step Solution
- Step 1: Write the proportion equation
147,722.20 : 221,324.10 = 121,283.80 : x - Step 2: Convert to fraction form
147,722.20/221,324.10 = 121,283.80/x - Step 3: Cross multiply
147,722.20x = 221,324.10 × 121,283.80 - Step 4: Simplify right side
147,722.20x = 26,843,027,879.58 - Step 5: Solve for x
x = 26,843,027,879.58/147,722.20 - Step 6: Final answer
x = 181,712.89
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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.