Finding the Fourth Proportional to 128,694,554.80, 193,051,163.40 and 77,466,266.80
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Solution
The fourth proportional to 128,694,554.80, 193,051,163.40 and 77,466,266.80 is: 116,205,017.01
Step by Step Solution
- Step 1: Write the proportion equation
128,694,554.80 : 193,051,163.40 = 77,466,266.80 : x - Step 2: Convert to fraction form
128,694,554.80/193,051,163.40 = 77,466,266.80/x - Step 3: Cross multiply
128,694,554.80x = 193,051,163.40 × 77,466,266.80 - Step 4: Simplify right side
128,694,554.80x = 14,954,952,929,994,796 - Step 5: Solve for x
x = 14,954,952,929,994,796/128,694,554.80 - Step 6: Final answer
x = 116,205,017.01
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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.