Finding the Fourth Proportional to 121,374.20, 181,964.10 and 51,195.80
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Solution
The fourth proportional to 121,374.20, 181,964.10 and 51,195.80 is: 76,752.70
Step by Step Solution
- Step 1: Write the proportion equation
121,374.20 : 181,964.10 = 51,195.80 : x - Step 2: Convert to fraction form
121,374.20/181,964.10 = 51,195.80/x - Step 3: Cross multiply
121,374.20x = 181,964.10 × 51,195.80 - Step 4: Simplify right side
121,374.20x = 9,315,797,670.78 - Step 5: Solve for x
x = 9,315,797,670.78/121,374.20 - Step 6: Final answer
x = 76,752.70
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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.