Finding the Fourth Proportional to 138,113.70, 207,180.99 and 38,272.74
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Solution
The fourth proportional to 138,113.70, 207,180.99 and 38,272.74 is: 57,412.00
Step by Step Solution
- Step 1: Write the proportion equation
138,113.70 : 207,180.99 = 38,272.74 : x - Step 2: Convert to fraction form
138,113.70/207,180.99 = 38,272.74/x - Step 3: Cross multiply
138,113.70x = 207,180.99 × 38,272.74 - Step 4: Simplify right side
138,113.70x = 7,929,384,163.21 - Step 5: Solve for x
x = 7,929,384,163.21/138,113.70 - Step 6: Final answer
x = 57,412.00
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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.