Finding the Fourth Proportional to 150,611.76, 207,821.10 and 86,937.26
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Solution
The fourth proportional to 150,611.76, 207,821.10 and 86,937.26 is: 119,960.07
Step by Step Solution
- Step 1: Write the proportion equation
150,611.76 : 207,821.10 = 86,937.26 : x - Step 2: Convert to fraction form
150,611.76/207,821.10 = 86,937.26/x - Step 3: Cross multiply
150,611.76x = 207,821.10 × 86,937.26 - Step 4: Simplify right side
150,611.76x = 18,067,397,004.19 - Step 5: Solve for x
x = 18,067,397,004.19/150,611.76 - Step 6: Final answer
x = 119,960.07
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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.