Finding the Fourth Proportional to 135,521,115.20, 203,281,672.80 and 81,773,403.20
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Solution
The fourth proportional to 135,521,115.20, 203,281,672.80 and 81,773,403.20 is: 122,660,104.80
Step by Step Solution
- Step 1: Write the proportion equation
135,521,115.20 : 203,281,672.80 = 81,773,403.20 : x - Step 2: Convert to fraction form
135,521,115.20/203,281,672.80 = 81,773,403.20/x - Step 3: Cross multiply
135,521,115.20x = 203,281,672.80 × 81,773,403.20 - Step 4: Simplify right side
135,521,115.20x = 16,623,034,193,044,874 - Step 5: Solve for x
x = 16,623,034,193,044,874/135,521,115.20 - Step 6: Final answer
x = 122,660,104.80
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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.