Finding the Fourth Proportional to 99,496,753,312.20, 149,245,129,968.30 and 81,830,379,013.80
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Solution
The fourth proportional to 99,496,753,312.20, 149,245,129,968.30 and 81,830,379,013.80 is: 122,745,568,520.70
Step by Step Solution
- Step 1: Write the proportion equation
99,496,753,312.20 : 149,245,129,968.30 = 81,830,379,013.80 : x - Step 2: Convert to fraction form
99,496,753,312.20/149,245,129,968.30 = 81,830,379,013.80/x - Step 3: Cross multiply
99,496,753,312.20x = 149,245,129,968.30 × 81,830,379,013.80 - Step 4: Simplify right side
99,496,753,312.20x = 12,212,785,551,269,829,804,032 - Step 5: Solve for x
x = 12,212,785,551,269,829,804,032/99,496,753,312.20 - Step 6: Final answer
x = 122,745,568,520.70
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1.5x scale
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.