Finding the Fourth Proportional to 131,444.91, 197,109.05 and 81,522.99
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Solution
The fourth proportional to 131,444.91, 197,109.05 and 81,522.99 is: 122,248.31
Step by Step Solution
- Step 1: Write the proportion equation
131,444.91 : 197,109.05 = 81,522.99 : x - Step 2: Convert to fraction form
131,444.91/197,109.05 = 81,522.99/x - Step 3: Cross multiply
131,444.91x = 197,109.05 × 81,522.99 - Step 4: Simplify right side
131,444.91x = 16,068,918,704.44 - Step 5: Solve for x
x = 16,068,918,704.44/131,444.91 - Step 6: Final answer
x = 122,248.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.