Finding the Fourth Proportional to 128,202.18, 192,372.12 and 53,373.98
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Solution
The fourth proportional to 128,202.18, 192,372.12 and 53,373.98 is: 80,089.63
Step by Step Solution
- Step 1: Write the proportion equation
128,202.18 : 192,372.12 = 53,373.98 : x - Step 2: Convert to fraction form
128,202.18/192,372.12 = 53,373.98/x - Step 3: Cross multiply
128,202.18x = 192,372.12 × 53,373.98 - Step 4: Simplify right side
128,202.18x = 10,267,664,723.58 - Step 5: Solve for x
x = 10,267,664,723.58/128,202.18 - Step 6: Final answer
x = 80,089.63
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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.