Finding the Fourth Proportional to 120,228.15, 180,405.09 and 49,203.51
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Solution
The fourth proportional to 120,228.15, 180,405.09 and 49,203.51 is: 73,830.99
Step by Step Solution
- Step 1: Write the proportion equation
120,228.15 : 180,405.09 = 49,203.51 : x - Step 2: Convert to fraction form
120,228.15/180,405.09 = 49,203.51/x - Step 3: Cross multiply
120,228.15x = 180,405.09 × 49,203.51 - Step 4: Simplify right side
120,228.15x = 8,876,563,649.87 - Step 5: Solve for x
x = 8,876,563,649.87/120,228.15 - Step 6: Final answer
x = 73,830.99
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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.