Finding the Fourth Proportional to 136,689.48, 188,629.74 and 76,259.40
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Solution
The fourth proportional to 136,689.48, 188,629.74 and 76,259.40 is: 105,237.00
Step by Step Solution
- Step 1: Write the proportion equation
136,689.48 : 188,629.74 = 76,259.40 : x - Step 2: Convert to fraction form
136,689.48/188,629.74 = 76,259.40/x - Step 3: Cross multiply
136,689.48x = 188,629.74 × 76,259.40 - Step 4: Simplify right side
136,689.48x = 14,384,790,794.56 - Step 5: Solve for x
x = 14,384,790,794.56/136,689.48 - Step 6: Final answer
x = 105,237.00
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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.