Finding the Fourth Proportional to 136,913.80, 205,370.70 and 121,246.60
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Solution
The fourth proportional to 136,913.80, 205,370.70 and 121,246.60 is: 181,869.90
Step by Step Solution
- Step 1: Write the proportion equation
136,913.80 : 205,370.70 = 121,246.60 : x - Step 2: Convert to fraction form
136,913.80/205,370.70 = 121,246.60/x - Step 3: Cross multiply
136,913.80x = 205,370.70 × 121,246.60 - Step 4: Simplify right side
136,913.80x = 24,900,499,114.62 - Step 5: Solve for x
x = 24,900,499,114.62/136,913.80 - Step 6: Final answer
x = 181,869.90
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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.