Finding the Fourth Proportional to 128,946,302.70, 193,419,454.05 and 88,131,633.90
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Solution
The fourth proportional to 128,946,302.70, 193,419,454.05 and 88,131,633.90 is: 132,197,450.85
Step by Step Solution
- Step 1: Write the proportion equation
128,946,302.70 : 193,419,454.05 = 88,131,633.90 : x - Step 2: Convert to fraction form
128,946,302.70/193,419,454.05 = 88,131,633.90/x - Step 3: Cross multiply
128,946,302.70x = 193,419,454.05 × 88,131,633.90 - Step 4: Simplify right side
128,946,302.70x = 17,046,372,513,472,474 - Step 5: Solve for x
x = 17,046,372,513,472,474/128,946,302.70 - Step 6: Final answer
x = 132,197,450.85
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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.