Finding the Fourth Proportional to 136,218.26, 187,976.47 and 74,958.73
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Solution
The fourth proportional to 136,218.26, 187,976.47 and 74,958.73 is: 103,440.45
Step by Step Solution
- Step 1: Write the proportion equation
136,218.26 : 187,976.47 = 74,958.73 : x - Step 2: Convert to fraction form
136,218.26/187,976.47 = 74,958.73/x - Step 3: Cross multiply
136,218.26x = 187,976.47 × 74,958.73 - Step 4: Simplify right side
136,218.26x = 14,090,477,461.08 - Step 5: Solve for x
x = 14,090,477,461.08/136,218.26 - Step 6: Final answer
x = 103,440.45
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1.5x scale
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.