Finding the Fourth Proportional to 138,076.94, 207,115.61 and 42,014.99
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Solution
The fourth proportional to 138,076.94, 207,115.61 and 42,014.99 is: 63,022.54
Step by Step Solution
- Step 1: Write the proportion equation
138,076.94 : 207,115.61 = 42,014.99 : x - Step 2: Convert to fraction form
138,076.94/207,115.61 = 42,014.99/x - Step 3: Cross multiply
138,076.94x = 207,115.61 × 42,014.99 - Step 4: Simplify right side
138,076.94x = 8,701,959,037.34 - Step 5: Solve for x
x = 8,701,959,037.34/138,076.94 - Step 6: Final answer
x = 63,022.54
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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.