Finding the Fourth Proportional to 120,414.60, 180,623.72 and 45,569.99
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Solution
The fourth proportional to 120,414.60, 180,623.72 and 45,569.99 is: 68,355.68
Step by Step Solution
- Step 1: Write the proportion equation
120,414.60 : 180,623.72 = 45,569.99 : x - Step 2: Convert to fraction form
120,414.60/180,623.72 = 45,569.99/x - Step 3: Cross multiply
120,414.60x = 180,623.72 × 45,569.99 - Step 4: Simplify right side
120,414.60x = 8,231,021,679.65 - Step 5: Solve for x
x = 8,231,021,679.65/120,414.60 - Step 6: Final answer
x = 68,355.68
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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.