Finding the Fourth Proportional to 208,643.70, 312,965.55 and 125,699.70
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Solution
The fourth proportional to 208,643.70, 312,965.55 and 125,699.70 is: 188,549.55
Step by Step Solution
- Step 1: Write the proportion equation
208,643.70 : 312,965.55 = 125,699.70 : x - Step 2: Convert to fraction form
208,643.70/312,965.55 = 125,699.70/x - Step 3: Cross multiply
208,643.70x = 312,965.55 × 125,699.70 - Step 4: Simplify right side
208,643.70x = 39,339,675,745.34 - Step 5: Solve for x
x = 39,339,675,745.34/208,643.70 - Step 6: Final answer
x = 188,549.55
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1.5x scale
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.