Finding the Fourth Proportional to 121,603.80, 182,405.70 and 119,011.80
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Solution
The fourth proportional to 121,603.80, 182,405.70 and 119,011.80 is: 178,517.70
Step by Step Solution
- Step 1: Write the proportion equation
121,603.80 : 182,405.70 = 119,011.80 : x - Step 2: Convert to fraction form
121,603.80/182,405.70 = 119,011.80/x - Step 3: Cross multiply
121,603.80x = 182,405.70 × 119,011.80 - Step 4: Simplify right side
121,603.80x = 21,708,430,687.26 - Step 5: Solve for x
x = 21,708,430,687.26/121,603.80 - Step 6: Final answer
x = 178,517.70
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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.