Finding the Fourth Proportional to 129,307,738.20, 194,056,085.70 and 91,043,986.20
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Solution
The fourth proportional to 129,307,738.20, 194,056,085.70 and 91,043,986.20 is: 136,632,500.38
Step by Step Solution
- Step 1: Write the proportion equation
129,307,738.20 : 194,056,085.70 = 91,043,986.20 : x - Step 2: Convert to fraction form
129,307,738.20/194,056,085.70 = 91,043,986.20/x - Step 3: Cross multiply
129,307,738.20x = 194,056,085.70 × 91,043,986.20 - Step 4: Simplify right side
129,307,738.20x = 17,667,639,588,496,816 - Step 5: Solve for x
x = 17,667,639,588,496,816/129,307,738.20 - Step 6: Final answer
x = 136,632,500.38
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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.