Finding the Fourth Proportional to 87,439,717.80, 131,159,576.70 and 84,920,293.80
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Solution
The fourth proportional to 87,439,717.80, 131,159,576.70 and 84,920,293.80 is: 127,380,440.70
Step by Step Solution
- Step 1: Write the proportion equation
87,439,717.80 : 131,159,576.70 = 84,920,293.80 : x - Step 2: Convert to fraction form
87,439,717.80/131,159,576.70 = 84,920,293.80/x - Step 3: Cross multiply
87,439,717.80x = 131,159,576.70 × 84,920,293.80 - Step 4: Simplify right side
87,439,717.80x = 11,138,109,788,047,634 - Step 5: Solve for x
x = 11,138,109,788,047,634/87,439,717.80 - Step 6: Final answer
x = 127,380,440.70
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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.