Finding the Fourth Proportional to 128,626.82, 177,506.36 and 71,267.90
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Solution
The fourth proportional to 128,626.82, 177,506.36 and 71,267.90 is: 98,350.45
Step by Step Solution
- Step 1: Write the proportion equation
128,626.82 : 177,506.36 = 71,267.90 : x - Step 2: Convert to fraction form
128,626.82/177,506.36 = 71,267.90/x - Step 3: Cross multiply
128,626.82x = 177,506.36 × 71,267.90 - Step 4: Simplify right side
128,626.82x = 12,650,505,513.84 - Step 5: Solve for x
x = 12,650,505,513.84/128,626.82 - Step 6: Final answer
x = 98,350.45
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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.