Finding the Fourth Proportional to 137,991.71, 207,012.17 and 38,149.70
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Solution
The fourth proportional to 137,991.71, 207,012.17 and 38,149.70 is: 57,231.34
Step by Step Solution
- Step 1: Write the proportion equation
137,991.71 : 207,012.17 = 38,149.70 : x - Step 2: Convert to fraction form
137,991.71/207,012.17 = 38,149.70/x - Step 3: Cross multiply
137,991.71x = 207,012.17 × 38,149.70 - Step 4: Simplify right side
137,991.71x = 7,897,451,242.16 - Step 5: Solve for x
x = 7,897,451,242.16/137,991.71 - Step 6: Final answer
x = 57,231.34
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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.