Finding the Fourth Proportional to 133,198.70, 183,813.50 and 72,768.65
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Solution
The fourth proportional to 133,198.70, 183,813.50 and 72,768.65 is: 100,420.35
Step by Step Solution
- Step 1: Write the proportion equation
133,198.70 : 183,813.50 = 72,768.65 : x - Step 2: Convert to fraction form
133,198.70/183,813.50 = 72,768.65/x - Step 3: Cross multiply
133,198.70x = 183,813.50 × 72,768.65 - Step 4: Simplify right side
133,198.70x = 13,375,859,509.63 - Step 5: Solve for x
x = 13,375,859,509.63/133,198.70 - Step 6: Final answer
x = 100,420.35
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.