Finding the Fourth Proportional to 98,496,220.80, 147,531,754.80 and 81,490,108.80
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Solution
The fourth proportional to 98,496,220.80, 147,531,754.80 and 81,490,108.80 is: 122,059,289.71
Step by Step Solution
- Step 1: Write the proportion equation
98,496,220.80 : 147,531,754.80 = 81,490,108.80 : x - Step 2: Convert to fraction form
98,496,220.80/147,531,754.80 = 81,490,108.80/x - Step 3: Cross multiply
98,496,220.80x = 147,531,754.80 × 81,490,108.80 - Step 4: Simplify right side
98,496,220.80x = 12,022,378,750,106,922 - Step 5: Solve for x
x = 12,022,378,750,106,922/98,496,220.80 - Step 6: Final answer
x = 122,059,289.71
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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.