Finding the Fourth Proportional to 115,239.05, 158,973.36 and 77,007.99
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Solution
The fourth proportional to 115,239.05, 158,973.36 and 77,007.99 is: 106,233.25
Step by Step Solution
- Step 1: Write the proportion equation
115,239.05 : 158,973.36 = 77,007.99 : x - Step 2: Convert to fraction form
115,239.05/158,973.36 = 77,007.99/x - Step 3: Cross multiply
115,239.05x = 158,973.36 × 77,007.99 - Step 4: Simplify right side
115,239.05x = 12,242,218,917.15 - Step 5: Solve for x
x = 12,242,218,917.15/115,239.05 - Step 6: Final answer
x = 106,233.25
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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.