Finding the Fourth Proportional to 128,124,003.40, 192,186,005.10 and 126,929,609.80
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Solution
The fourth proportional to 128,124,003.40, 192,186,005.10 and 126,929,609.80 is: 190,394,414.70
Step by Step Solution
- Step 1: Write the proportion equation
128,124,003.40 : 192,186,005.10 = 126,929,609.80 : x - Step 2: Convert to fraction form
128,124,003.40/192,186,005.10 = 126,929,609.80/x - Step 3: Cross multiply
128,124,003.40x = 192,186,005.10 × 126,929,609.80 - Step 4: Simplify right side
128,124,003.40x = 24,394,094,636,363,808 - Step 5: Solve for x
x = 24,394,094,636,363,808/128,124,003.40 - Step 6: Final answer
x = 190,394,414.70
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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.