Finding the Fourth Proportional to 117,521,791.80, 176,282,687.70 and 87,288,703.80
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Solution
The fourth proportional to 117,521,791.80, 176,282,687.70 and 87,288,703.80 is: 130,933,055.70
Step by Step Solution
- Step 1: Write the proportion equation
117,521,791.80 : 176,282,687.70 = 87,288,703.80 : x - Step 2: Convert to fraction form
117,521,791.80/176,282,687.70 = 87,288,703.80/x - Step 3: Cross multiply
117,521,791.80x = 176,282,687.70 × 87,288,703.80 - Step 4: Simplify right side
117,521,791.80x = 15,387,487,311,713,202 - Step 5: Solve for x
x = 15,387,487,311,713,202/117,521,791.80 - Step 6: Final answer
x = 130,933,055.70
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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.