Finding the Fourth Proportional to 149,948.58, 206,929.05 and 81,965.82
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Solution
The fourth proportional to 149,948.58, 206,929.05 and 81,965.82 is: 113,112.84
Step by Step Solution
- Step 1: Write the proportion equation
149,948.58 : 206,929.05 = 81,965.82 : x - Step 2: Convert to fraction form
149,948.58/206,929.05 = 81,965.82/x - Step 3: Cross multiply
149,948.58x = 206,929.05 × 81,965.82 - Step 4: Simplify right side
149,948.58x = 16,961,108,855.24 - Step 5: Solve for x
x = 16,961,108,855.24/149,948.58 - Step 6: Final answer
x = 113,112.84
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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.