Finding the Fourth Proportional to 137,728.10, 206,592.15 and 121,657.70
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Solution
The fourth proportional to 137,728.10, 206,592.15 and 121,657.70 is: 182,486.55
Step by Step Solution
- Step 1: Write the proportion equation
137,728.10 : 206,592.15 = 121,657.70 : x - Step 2: Convert to fraction form
137,728.10/206,592.15 = 121,657.70/x - Step 3: Cross multiply
137,728.10x = 206,592.15 × 121,657.70 - Step 4: Simplify right side
137,728.10x = 25,133,525,807.06 - Step 5: Solve for x
x = 25,133,525,807.06/137,728.10 - Step 6: Final answer
x = 182,486.55
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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.