Finding the Fourth Proportional to 112,661.88, 155,332.26 and 72,304.44
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Solution
The fourth proportional to 112,661.88, 155,332.26 and 72,304.44 is: 99,689.55
Step by Step Solution
- Step 1: Write the proportion equation
112,661.88 : 155,332.26 = 72,304.44 : x - Step 2: Convert to fraction form
112,661.88/155,332.26 = 72,304.44/x - Step 3: Cross multiply
112,661.88x = 155,332.26 × 72,304.44 - Step 4: Simplify right side
112,661.88x = 11,231,212,073.23 - Step 5: Solve for x
x = 11,231,212,073.23/112,661.88 - Step 6: Final answer
x = 99,689.55
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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.