Finding the Fourth Proportional to 100,261.63, 138,361.05 and 59,977.09
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Solution
The fourth proportional to 100,261.63, 138,361.05 and 59,977.09 is: 82,768.38
Step by Step Solution
- Step 1: Write the proportion equation
100,261.63 : 138,361.05 = 59,977.09 : x - Step 2: Convert to fraction form
100,261.63/138,361.05 = 59,977.09/x - Step 3: Cross multiply
100,261.63x = 138,361.05 × 59,977.09 - Step 4: Simplify right side
100,261.63x = 8,298,492,156.65 - Step 5: Solve for x
x = 8,298,492,156.65/100,261.63 - Step 6: Final answer
x = 82,768.38
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1.5x scale
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.