Finding the Fourth Proportional to 121,764.80, 182,647.20 and 102,519.20
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Solution
The fourth proportional to 121,764.80, 182,647.20 and 102,519.20 is: 153,778.80
Step by Step Solution
- Step 1: Write the proportion equation
121,764.80 : 182,647.20 = 102,519.20 : x - Step 2: Convert to fraction form
121,764.80/182,647.20 = 102,519.20/x - Step 3: Cross multiply
121,764.80x = 182,647.20 × 102,519.20 - Step 4: Simplify right side
121,764.80x = 18,724,844,826.24 - Step 5: Solve for x
x = 18,724,844,826.24/121,764.80 - Step 6: Final answer
x = 153,778.80
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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.