Finding the Fourth Proportional to 98,415,478.80, 147,623,218.20 and 72,906,310.80
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Solution
The fourth proportional to 98,415,478.80, 147,623,218.20 and 72,906,310.80 is: 109,359,466.20
Step by Step Solution
- Step 1: Write the proportion equation
98,415,478.80 : 147,623,218.20 = 72,906,310.80 : x - Step 2: Convert to fraction form
98,415,478.80/147,623,218.20 = 72,906,310.80/x - Step 3: Cross multiply
98,415,478.80x = 147,623,218.20 × 72,906,310.80 - Step 4: Simplify right side
98,415,478.80x = 10,762,664,227,385,416 - Step 5: Solve for x
x = 10,762,664,227,385,416/98,415,478.80 - Step 6: Final answer
x = 109,359,466.20
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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.