Finding the Fourth Proportional to 135,988.79, 203,934.92 and 39,899.19
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Solution
The fourth proportional to 135,988.79, 203,934.92 and 39,899.19 is: 59,834.62
Step by Step Solution
- Step 1: Write the proportion equation
135,988.79 : 203,934.92 = 39,899.19 : x - Step 2: Convert to fraction form
135,988.79/203,934.92 = 39,899.19/x - Step 3: Cross multiply
135,988.79x = 203,934.92 × 39,899.19 - Step 4: Simplify right side
135,988.79x = 8,136,836,901.54 - Step 5: Solve for x
x = 8,136,836,901.54/135,988.79 - Step 6: Final answer
x = 59,834.62
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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.