Finding the Fourth Proportional to 137,212.81, 205,812.97 and 57,217.79
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Solution
The fourth proportional to 137,212.81, 205,812.97 and 57,217.79 is: 85,824.08
Step by Step Solution
- Step 1: Write the proportion equation
137,212.81 : 205,812.97 = 57,217.79 : x - Step 2: Convert to fraction form
137,212.81/205,812.97 = 57,217.79/x - Step 3: Cross multiply
137,212.81x = 205,812.97 × 57,217.79 - Step 4: Simplify right side
137,212.81x = 11,776,163,296.74 - Step 5: Solve for x
x = 11,776,163,296.74/137,212.81 - Step 6: Final answer
x = 85,824.08
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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.