Finding the Fourth Proportional to 87,430,232.80, 131,145,349.20 and 84,910,808.80
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Solution
The fourth proportional to 87,430,232.80, 131,145,349.20 and 84,910,808.80 is: 127,366,213.20
Step by Step Solution
- Step 1: Write the proportion equation
87,430,232.80 : 131,145,349.20 = 84,910,808.80 : x - Step 2: Convert to fraction form
87,430,232.80/131,145,349.20 = 84,910,808.80/x - Step 3: Cross multiply
87,430,232.80x = 131,145,349.20 × 84,910,808.80 - Step 4: Simplify right side
87,430,232.80x = 11,135,657,670,930,432 - Step 5: Solve for x
x = 11,135,657,670,930,432/87,430,232.80 - Step 6: Final answer
x = 127,366,213.20
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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.