Finding the Fourth Proportional to 136,614.16, 188,528.36 and 76,188.62
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Solution
The fourth proportional to 136,614.16, 188,528.36 and 76,188.62 is: 105,140.75
Step by Step Solution
- Step 1: Write the proportion equation
136,614.16 : 188,528.36 = 76,188.62 : x - Step 2: Convert to fraction form
136,614.16/188,528.36 = 76,188.62/x - Step 3: Cross multiply
136,614.16x = 188,528.36 × 76,188.62 - Step 4: Simplify right side
136,614.16x = 14,363,715,579.26 - Step 5: Solve for x
x = 14,363,715,579.26/136,614.16 - Step 6: Final answer
x = 105,140.75
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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.