Finding the Fourth Proportional to 107,813.80, 161,720.70 and 61,157.80
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Solution
The fourth proportional to 107,813.80, 161,720.70 and 61,157.80 is: 91,736.70
Step by Step Solution
- Step 1: Write the proportion equation
107,813.80 : 161,720.70 = 61,157.80 : x - Step 2: Convert to fraction form
107,813.80/161,720.70 = 61,157.80/x - Step 3: Cross multiply
107,813.80x = 161,720.70 × 61,157.80 - Step 4: Simplify right side
107,813.80x = 9,890,482,226.46 - Step 5: Solve for x
x = 9,890,482,226.46/107,813.80 - Step 6: Final answer
x = 91,736.70
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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.