Finding the Fourth Proportional to 129,244,145.76, 178,332,527.98 and 77,038,039.12
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Solution
The fourth proportional to 129,244,145.76, 178,332,527.98 and 77,038,039.12 is: 106,297,954.05
Step by Step Solution
- Step 1: Write the proportion equation
129,244,145.76 : 178,332,527.98 = 77,038,039.12 : x - Step 2: Convert to fraction form
129,244,145.76/178,332,527.98 = 77,038,039.12/x - Step 3: Cross multiply
129,244,145.76x = 178,332,527.98 × 77,038,039.12 - Step 4: Simplify right side
129,244,145.76x = 13,738,388,266,891,734 - Step 5: Solve for x
x = 13,738,388,266,891,734/129,244,145.76 - Step 6: Final answer
x = 106,297,954.05
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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.