Finding the Fourth Proportional to 136,116.09, 187,812.54 and 79,516.53
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Solution
The fourth proportional to 136,116.09, 187,812.54 and 79,516.53 is: 109,716.65
Step by Step Solution
- Step 1: Write the proportion equation
136,116.09 : 187,812.54 = 79,516.53 : x - Step 2: Convert to fraction form
136,116.09/187,812.54 = 79,516.53/x - Step 3: Cross multiply
136,116.09x = 187,812.54 × 79,516.53 - Step 4: Simplify right side
136,116.09x = 14,934,201,471.29 - Step 5: Solve for x
x = 14,934,201,471.29/136,116.09 - Step 6: Final answer
x = 109,716.65
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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.