Finding the Fourth Proportional to 136,949.39, 188,986.62 and 76,520.53
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Solution
The fourth proportional to 136,949.39, 188,986.62 and 76,520.53 is: 105,596.35
Step by Step Solution
- Step 1: Write the proportion equation
136,949.39 : 188,986.62 = 76,520.53 : x - Step 2: Convert to fraction form
136,949.39/188,986.62 = 76,520.53/x - Step 3: Cross multiply
136,949.39x = 188,986.62 × 76,520.53 - Step 4: Simplify right side
136,949.39x = 14,461,356,325.31 - Step 5: Solve for x
x = 14,461,356,325.31/136,949.39 - Step 6: Final answer
x = 105,596.35
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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.