Finding the Fourth Proportional to 158,630.12, 218,865.18 and 102,074.28
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Solution
The fourth proportional to 158,630.12, 218,865.18 and 102,074.28 is: 140,833.95
Step by Step Solution
- Step 1: Write the proportion equation
158,630.12 : 218,865.18 = 102,074.28 : x - Step 2: Convert to fraction form
158,630.12/218,865.18 = 102,074.28/x - Step 3: Cross multiply
158,630.12x = 218,865.18 × 102,074.28 - Step 4: Simplify right side
158,630.12x = 22,340,505,665.57 - Step 5: Solve for x
x = 22,340,505,665.57/158,630.12 - Step 6: Final answer
x = 140,833.95
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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.