Finding the Fourth Proportional to 99,181.21, 136,869.65 and 53,858.82
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Solution
The fourth proportional to 99,181.21, 136,869.65 and 53,858.82 is: 74,324.95
Step by Step Solution
- Step 1: Write the proportion equation
99,181.21 : 136,869.65 = 53,858.82 : x - Step 2: Convert to fraction form
99,181.21/136,869.65 = 53,858.82/x - Step 3: Cross multiply
99,181.21x = 136,869.65 × 53,858.82 - Step 4: Simplify right side
99,181.21x = 7,371,638,288.75 - Step 5: Solve for x
x = 7,371,638,288.75/99,181.21 - Step 6: Final answer
x = 74,324.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.