Finding the Fourth Proportional to 128,304,420.60, 192,456,630.90 and 125,753,503.80
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Solution
The fourth proportional to 128,304,420.60, 192,456,630.90 and 125,753,503.80 is: 188,630,255.70
Step by Step Solution
- Step 1: Write the proportion equation
128,304,420.60 : 192,456,630.90 = 125,753,503.80 : x - Step 2: Convert to fraction form
128,304,420.60/192,456,630.90 = 125,753,503.80/x - Step 3: Cross multiply
128,304,420.60x = 192,456,630.90 × 125,753,503.80 - Step 4: Simplify right side
128,304,420.60x = 24,202,095,665,218,348 - Step 5: Solve for x
x = 24,202,095,665,218,348/128,304,420.60 - Step 6: Final answer
x = 188,630,255.70
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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.