Finding the Fourth Proportional to 128,317,401.71, 192,399,237.40 and 40,841,133.58
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Solution
The fourth proportional to 128,317,401.71, 192,399,237.40 and 40,841,133.58 is: 61,237,235.56
Step by Step Solution
- Step 1: Write the proportion equation
128,317,401.71 : 192,399,237.40 = 40,841,133.58 : x - Step 2: Convert to fraction form
128,317,401.71/192,399,237.40 = 40,841,133.58/x - Step 3: Cross multiply
128,317,401.71x = 192,399,237.40 × 40,841,133.58 - Step 4: Simplify right side
128,317,401.71x = 7,857,802,955,481,928 - Step 5: Solve for x
x = 7,857,802,955,481,928/128,317,401.71 - Step 6: Final answer
x = 61,237,235.56
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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.