Finding the Fourth Proportional to 120,510,721.18, 166,304,902.39 and 65,506,577.68
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Solution
The fourth proportional to 120,510,721.18, 166,304,902.39 and 65,506,577.68 is: 90,399,135.45
Step by Step Solution
- Step 1: Write the proportion equation
120,510,721.18 : 166,304,902.39 = 65,506,577.68 : x - Step 2: Convert to fraction form
120,510,721.18/166,304,902.39 = 65,506,577.68/x - Step 3: Cross multiply
120,510,721.18x = 166,304,902.39 × 65,506,577.68 - Step 4: Simplify right side
120,510,721.18x = 10,894,065,007,387,614 - Step 5: Solve for x
x = 10,894,065,007,387,614/120,510,721.18 - Step 6: Final answer
x = 90,399,135.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.