Finding the Fourth Proportional to 127,718.61, 176,257.16 and 71,129.99
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Solution
The fourth proportional to 127,718.61, 176,257.16 and 71,129.99 is: 98,162.43
Step by Step Solution
- Step 1: Write the proportion equation
127,718.61 : 176,257.16 = 71,129.99 : x - Step 2: Convert to fraction form
127,718.61/176,257.16 = 71,129.99/x - Step 3: Cross multiply
127,718.61x = 176,257.16 × 71,129.99 - Step 4: Simplify right side
127,718.61x = 12,537,168,791.29 - Step 5: Solve for x
x = 12,537,168,791.29/127,718.61 - Step 6: Final answer
x = 98,162.43
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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.