Finding the Fourth Proportional to 121,379,408.80, 182,069,113.20 and 84,391,115.20
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Solution
The fourth proportional to 121,379,408.80, 182,069,113.20 and 84,391,115.20 is: 126,586,672.80
Step by Step Solution
- Step 1: Write the proportion equation
121,379,408.80 : 182,069,113.20 = 84,391,115.20 : x - Step 2: Convert to fraction form
121,379,408.80/182,069,113.20 = 84,391,115.20/x - Step 3: Cross multiply
121,379,408.80x = 182,069,113.20 × 84,391,115.20 - Step 4: Simplify right side
121,379,408.80x = 15,365,015,506,423,040 - Step 5: Solve for x
x = 15,365,015,506,423,040/121,379,408.80 - Step 6: Final answer
x = 126,586,672.80
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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.