Finding the Fourth Proportional to 99,745.68, 137,648.99 and 63,935.66
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Solution
The fourth proportional to 99,745.68, 137,648.99 and 63,935.66 is: 88,231.18
Step by Step Solution
- Step 1: Write the proportion equation
99,745.68 : 137,648.99 = 63,935.66 : x - Step 2: Convert to fraction form
99,745.68/137,648.99 = 63,935.66/x - Step 3: Cross multiply
99,745.68x = 137,648.99 × 63,935.66 - Step 4: Simplify right side
99,745.68x = 8,800,679,168.31 - Step 5: Solve for x
x = 8,800,679,168.31/99,745.68 - Step 6: Final answer
x = 88,231.18
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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.