Finding the Fourth Proportional to 115,238.05, 158,971.98 and 77,006.99
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Solution
The fourth proportional to 115,238.05, 158,971.98 and 77,006.99 is: 106,231.87
Step by Step Solution
- Step 1: Write the proportion equation
115,238.05 : 158,971.98 = 77,006.99 : x - Step 2: Convert to fraction form
115,238.05/158,971.98 = 77,006.99/x - Step 3: Cross multiply
115,238.05x = 158,971.98 × 77,006.99 - Step 4: Simplify right side
115,238.05x = 12,241,953,674.14 - Step 5: Solve for x
x = 12,241,953,674.14/115,238.05 - Step 6: Final answer
x = 106,231.87
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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.