Finding the Fourth Proportional to 138,548.22, 207,857.70 and 38,708.70
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Solution
The fourth proportional to 138,548.22, 207,857.70 and 38,708.70 is: 58,072.93
Step by Step Solution
- Step 1: Write the proportion equation
138,548.22 : 207,857.70 = 38,708.70 : x - Step 2: Convert to fraction form
138,548.22/207,857.70 = 38,708.70/x - Step 3: Cross multiply
138,548.22x = 207,857.70 × 38,708.70 - Step 4: Simplify right side
138,548.22x = 8,045,901,351.99 - Step 5: Solve for x
x = 8,045,901,351.99/138,548.22 - Step 6: Final answer
x = 58,072.93
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.