Finding the Fourth Proportional to 138,112.95, 207,179.87 and 38,271.99
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Solution
The fourth proportional to 138,112.95, 207,179.87 and 38,271.99 is: 57,410.88
Step by Step Solution
- Step 1: Write the proportion equation
138,112.95 : 207,179.87 = 38,271.99 : x - Step 2: Convert to fraction form
138,112.95/207,179.87 = 38,271.99/x - Step 3: Cross multiply
138,112.95x = 207,179.87 × 38,271.99 - Step 4: Simplify right side
138,112.95x = 7,929,185,721.48 - Step 5: Solve for x
x = 7,929,185,721.48/138,112.95 - Step 6: Final answer
x = 57,410.88
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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.