Finding the Fourth Proportional to 128,317,401.16, 192,399,236.58 and 40,841,133.04
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Solution
The fourth proportional to 128,317,401.16, 192,399,236.58 and 40,841,133.04 is: 61,237,234.75
Step by Step Solution
- Step 1: Write the proportion equation
128,317,401.16 : 192,399,236.58 = 40,841,133.04 : x - Step 2: Convert to fraction form
128,317,401.16/192,399,236.58 = 40,841,133.04/x - Step 3: Cross multiply
128,317,401.16x = 192,399,236.58 × 40,841,133.04 - Step 4: Simplify right side
128,317,401.16x = 7,857,802,817,958,215 - Step 5: Solve for x
x = 7,857,802,817,958,215/128,317,401.16 - Step 6: Final answer
x = 61,237,234.75
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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.