Finding the Fourth Proportional to 138,916.70, 208,376.08 and 39,086.99
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Solution
The fourth proportional to 138,916.70, 208,376.08 and 39,086.99 is: 58,630.77
Step by Step Solution
- Step 1: Write the proportion equation
138,916.70 : 208,376.08 = 39,086.99 : x - Step 2: Convert to fraction form
138,916.70/208,376.08 = 39,086.99/x - Step 3: Cross multiply
138,916.70x = 208,376.08 × 39,086.99 - Step 4: Simplify right side
138,916.70x = 8,144,792,615.60 - Step 5: Solve for x
x = 8,144,792,615.60/138,916.70 - Step 6: Final answer
x = 58,630.77
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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.