Finding the Fourth Proportional to 133,107.59, 183,687.08 and 72,678.05
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Solution
The fourth proportional to 133,107.59, 183,687.08 and 72,678.05 is: 100,294.95
Step by Step Solution
- Step 1: Write the proportion equation
133,107.59 : 183,687.08 = 72,678.05 : x - Step 2: Convert to fraction form
133,107.59/183,687.08 = 72,678.05/x - Step 3: Cross multiply
133,107.59x = 183,687.08 × 72,678.05 - Step 4: Simplify right side
133,107.59x = 13,350,018,784.59 - Step 5: Solve for x
x = 13,350,018,784.59/133,107.59 - Step 6: Final answer
x = 100,294.95
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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.