Finding the Fourth Proportional to 115,455.84, 159,439.09 and 109,165.82
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Solution
The fourth proportional to 115,455.84, 159,439.09 and 109,165.82 is: 150,752.87
Step by Step Solution
- Step 1: Write the proportion equation
115,455.84 : 159,439.09 = 109,165.82 : x - Step 2: Convert to fraction form
115,455.84/159,439.09 = 109,165.82/x - Step 3: Cross multiply
115,455.84x = 159,439.09 × 109,165.82 - Step 4: Simplify right side
115,455.84x = 17,405,298,999.90 - Step 5: Solve for x
x = 17,405,298,999.90/115,455.84 - Step 6: Final answer
x = 150,752.87
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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.