Finding the Fourth Proportional to 129,129,905.70, 193,694,858.55 and 47,248,625.70
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Solution
The fourth proportional to 129,129,905.70, 193,694,858.55 and 47,248,625.70 is: 70,872,938.55
Step by Step Solution
- Step 1: Write the proportion equation
129,129,905.70 : 193,694,858.55 = 47,248,625.70 : x - Step 2: Convert to fraction form
129,129,905.70/193,694,858.55 = 47,248,625.70/x - Step 3: Cross multiply
129,129,905.70x = 193,694,858.55 × 47,248,625.70 - Step 4: Simplify right side
129,129,905.70x = 9,151,815,871,643,396 - Step 5: Solve for x
x = 9,151,815,871,643,396/129,129,905.70 - Step 6: Final answer
x = 70,872,938.55
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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.