Finding the Fourth Proportional to 138,621.61, 191,297.84 and 74,959.41
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Solution
The fourth proportional to 138,621.61, 191,297.84 and 74,959.41 is: 103,444.00
Step by Step Solution
- Step 1: Write the proportion equation
138,621.61 : 191,297.84 = 74,959.41 : x - Step 2: Convert to fraction form
138,621.61/191,297.84 = 74,959.41/x - Step 3: Cross multiply
138,621.61x = 191,297.84 × 74,959.41 - Step 4: Simplify right side
138,621.61x = 14,339,573,563.24 - Step 5: Solve for x
x = 14,339,573,563.24/138,621.61 - Step 6: Final answer
x = 103,444.00
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.