Finding the Fourth Proportional to 76,158.18, 114,237.45 and 20,754.18
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Solution
The fourth proportional to 76,158.18, 114,237.45 and 20,754.18 is: 31,131.32
Step by Step Solution
- Step 1: Write the proportion equation
76,158.18 : 114,237.45 = 20,754.18 : x - Step 2: Convert to fraction form
76,158.18/114,237.45 = 20,754.18/x - Step 3: Cross multiply
76,158.18x = 114,237.45 × 20,754.18 - Step 4: Simplify right side
76,158.18x = 2,370,904,600.04 - Step 5: Solve for x
x = 2,370,904,600.04/76,158.18 - Step 6: Final answer
x = 31,131.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.