Finding the Fourth Proportional to 115,910.96, 159,961.06 and 64,925.88
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Solution
The fourth proportional to 115,910.96, 159,961.06 and 64,925.88 is: 89,599.92
Step by Step Solution
- Step 1: Write the proportion equation
115,910.96 : 159,961.06 = 64,925.88 : x - Step 2: Convert to fraction form
115,910.96/159,961.06 = 64,925.88/x - Step 3: Cross multiply
115,910.96x = 159,961.06 × 64,925.88 - Step 4: Simplify right side
115,910.96x = 10,385,612,586.23 - Step 5: Solve for x
x = 10,385,612,586.23/115,910.96 - Step 6: Final answer
x = 89,599.92
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1.5x scale
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.