Finding the Fourth Proportional to 87,372,122.40, 131,058,183.60 and 85,671,511.20
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Solution
The fourth proportional to 87,372,122.40, 131,058,183.60 and 85,671,511.20 is: 128,507,266.80
Step by Step Solution
- Step 1: Write the proportion equation
87,372,122.40 : 131,058,183.60 = 85,671,511.20 : x - Step 2: Convert to fraction form
87,372,122.40/131,058,183.60 = 85,671,511.20/x - Step 3: Cross multiply
87,372,122.40x = 131,058,183.60 × 85,671,511.20 - Step 4: Simplify right side
87,372,122.40x = 11,227,952,644,139,056 - Step 5: Solve for x
x = 11,227,952,644,139,056/87,372,122.40 - Step 6: Final answer
x = 128,507,266.80
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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.