Finding the Fourth Proportional to 129,558.63, 194,337.95 and 74,115.75
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Solution
The fourth proportional to 129,558.63, 194,337.95 and 74,115.75 is: 111,173.63
Step by Step Solution
- Step 1: Write the proportion equation
129,558.63 : 194,337.95 = 74,115.75 : x - Step 2: Convert to fraction form
129,558.63/194,337.95 = 74,115.75/x - Step 3: Cross multiply
129,558.63x = 194,337.95 × 74,115.75 - Step 4: Simplify right side
129,558.63x = 14,403,502,547.13 - Step 5: Solve for x
x = 14,403,502,547.13/129,558.63 - Step 6: Final answer
x = 111,173.63
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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.