Finding the Fourth Proportional to 128,468.24, 177,281.64 and 71,107.67
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Solution
The fourth proportional to 128,468.24, 177,281.64 and 71,107.67 is: 98,126.07
Step by Step Solution
- Step 1: Write the proportion equation
128,468.24 : 177,281.64 = 71,107.67 : x - Step 2: Convert to fraction form
128,468.24/177,281.64 = 71,107.67/x - Step 3: Cross multiply
128,468.24x = 177,281.64 × 71,107.67 - Step 4: Simplify right side
128,468.24x = 12,606,083,600.18 - Step 5: Solve for x
x = 12,606,083,600.18/128,468.24 - Step 6: Final answer
x = 98,126.07
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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.