Finding the Fourth Proportional to 145,536,354.80, 218,304,532.20 and 72,764,367.20
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Solution
The fourth proportional to 145,536,354.80, 218,304,532.20 and 72,764,367.20 is: 109,146,550.80
Step by Step Solution
- Step 1: Write the proportion equation
145,536,354.80 : 218,304,532.20 = 72,764,367.20 : x - Step 2: Convert to fraction form
145,536,354.80/218,304,532.20 = 72,764,367.20/x - Step 3: Cross multiply
145,536,354.80x = 218,304,532.20 × 72,764,367.20 - Step 4: Simplify right side
145,536,354.80x = 15,884,791,142,425,024 - Step 5: Solve for x
x = 15,884,791,142,425,024/145,536,354.80 - Step 6: Final answer
x = 109,146,550.80
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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.