Finding the Fourth Proportional to 139,388,691.96, 192,356,553.24 and 77,507,701.92
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Solution
The fourth proportional to 139,388,691.96, 192,356,553.24 and 77,507,701.92 is: 106,960,716.69
Step by Step Solution
- Step 1: Write the proportion equation
139,388,691.96 : 192,356,553.24 = 77,507,701.92 : x - Step 2: Convert to fraction form
139,388,691.96/192,356,553.24 = 77,507,701.92/x - Step 3: Cross multiply
139,388,691.96x = 192,356,553.24 × 77,507,701.92 - Step 4: Simplify right side
139,388,691.96x = 14,909,114,390,884,532 - Step 5: Solve for x
x = 14,909,114,390,884,532/139,388,691.96 - Step 6: Final answer
x = 106,960,716.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.