Finding the Fourth Proportional to 122,437.12, 183,649.20 and 39,324.64
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Solution
The fourth proportional to 122,437.12, 183,649.20 and 39,324.64 is: 58,984.88
Step by Step Solution
- Step 1: Write the proportion equation
122,437.12 : 183,649.20 = 39,324.64 : x - Step 2: Convert to fraction form
122,437.12/183,649.20 = 39,324.64/x - Step 3: Cross multiply
122,437.12x = 183,649.20 × 39,324.64 - Step 4: Simplify right side
122,437.12x = 7,221,938,676.29 - Step 5: Solve for x
x = 7,221,938,676.29/122,437.12 - Step 6: Final answer
x = 58,984.88
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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.