Finding the Fourth Proportional to 99,650.21, 137,439.45 and 63,843.62
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Solution
The fourth proportional to 99,650.21, 137,439.45 and 63,843.62 is: 88,054.32
Step by Step Solution
- Step 1: Write the proportion equation
99,650.21 : 137,439.45 = 63,843.62 : x - Step 2: Convert to fraction form
99,650.21/137,439.45 = 63,843.62/x - Step 3: Cross multiply
99,650.21x = 137,439.45 × 63,843.62 - Step 4: Simplify right side
99,650.21x = 8,774,631,331.61 - Step 5: Solve for x
x = 8,774,631,331.61/99,650.21 - Step 6: Final answer
x = 88,054.32
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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.