Finding the Fourth Proportional to 149,447.40, 206,237.68 and 81,464.92
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Solution
The fourth proportional to 149,447.40, 206,237.68 and 81,464.92 is: 112,421.74
Step by Step Solution
- Step 1: Write the proportion equation
149,447.40 : 206,237.68 = 81,464.92 : x - Step 2: Convert to fraction form
149,447.40/206,237.68 = 81,464.92/x - Step 3: Cross multiply
149,447.40x = 206,237.68 × 81,464.92 - Step 4: Simplify right side
149,447.40x = 16,801,136,102.19 - Step 5: Solve for x
x = 16,801,136,102.19/149,447.40 - Step 6: Final answer
x = 112,421.74
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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.