Finding the Fourth Proportional to 80,734,110.80, 121,101,166.20 and 66,385,203.80
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Solution
The fourth proportional to 80,734,110.80, 121,101,166.20 and 66,385,203.80 is: 99,577,805.70
Step by Step Solution
- Step 1: Write the proportion equation
80,734,110.80 : 121,101,166.20 = 66,385,203.80 : x - Step 2: Convert to fraction form
80,734,110.80/121,101,166.20 = 66,385,203.80/x - Step 3: Cross multiply
80,734,110.80x = 121,101,166.20 × 66,385,203.80 - Step 4: Simplify right side
80,734,110.80x = 8,039,325,598,604,671 - Step 5: Solve for x
x = 8,039,325,598,604,671/80,734,110.80 - Step 6: Final answer
x = 99,577,805.70
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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.