Finding the Fourth Proportional to 136,883.75, 205,309.46 and 42,113.75
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Solution
The fourth proportional to 136,883.75, 205,309.46 and 42,113.75 is: 63,165.65
Step by Step Solution
- Step 1: Write the proportion equation
136,883.75 : 205,309.46 = 42,113.75 : x - Step 2: Convert to fraction form
136,883.75/205,309.46 = 42,113.75/x - Step 3: Cross multiply
136,883.75x = 205,309.46 × 42,113.75 - Step 4: Simplify right side
136,883.75x = 8,646,351,573.78 - Step 5: Solve for x
x = 8,646,351,573.78/136,883.75 - Step 6: Final answer
x = 63,165.65
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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.