Finding the Fourth Proportional to 128,232.24, 177,009.87 and 114,779.76
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Solution
The fourth proportional to 128,232.24, 177,009.87 and 114,779.76 is: 158,440.27
Step by Step Solution
- Step 1: Write the proportion equation
128,232.24 : 177,009.87 = 114,779.76 : x - Step 2: Convert to fraction form
128,232.24/177,009.87 = 114,779.76/x - Step 3: Cross multiply
128,232.24x = 177,009.87 × 114,779.76 - Step 4: Simplify right side
128,232.24x = 20,317,149,511.18 - Step 5: Solve for x
x = 20,317,149,511.18/128,232.24 - Step 6: Final answer
x = 158,440.27
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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.