Finding the Fourth Proportional to 128,203,794.80, 192,305,692.20 and 115,438,713.20
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Solution
The fourth proportional to 128,203,794.80, 192,305,692.20 and 115,438,713.20 is: 173,158,069.80
Step by Step Solution
- Step 1: Write the proportion equation
128,203,794.80 : 192,305,692.20 = 115,438,713.20 : x - Step 2: Convert to fraction form
128,203,794.80/192,305,692.20 = 115,438,713.20/x - Step 3: Cross multiply
128,203,794.80x = 192,305,692.20 × 115,438,713.20 - Step 4: Simplify right side
128,203,794.80x = 22,199,521,648,603,276 - Step 5: Solve for x
x = 22,199,521,648,603,276/128,203,794.80 - Step 6: Final answer
x = 173,158,069.80
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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.