Finding the Fourth Proportional to 128,118,201.40, 192,177,302.10 and 126,923,807.80
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Solution
The fourth proportional to 128,118,201.40, 192,177,302.10 and 126,923,807.80 is: 190,385,711.70
Step by Step Solution
- Step 1: Write the proportion equation
128,118,201.40 : 192,177,302.10 = 126,923,807.80 : x - Step 2: Convert to fraction form
128,118,201.40/192,177,302.10 = 126,923,807.80/x - Step 3: Cross multiply
128,118,201.40x = 192,177,302.10 × 126,923,807.80 - Step 4: Simplify right side
128,118,201.40x = 24,391,874,955,262,936 - Step 5: Solve for x
x = 24,391,874,955,262,936/128,118,201.40 - Step 6: Final answer
x = 190,385,711.70
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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.