Finding the Fourth Proportional to 118,937.75, 164,134.10 and 68,636.75
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Solution
The fourth proportional to 118,937.75, 164,134.10 and 68,636.75 is: 94,718.72
Step by Step Solution
- Step 1: Write the proportion equation
118,937.75 : 164,134.10 = 68,636.75 : x - Step 2: Convert to fraction form
118,937.75/164,134.10 = 68,636.75/x - Step 3: Cross multiply
118,937.75x = 164,134.10 × 68,636.75 - Step 4: Simplify right side
118,937.75x = 11,265,631,188.18 - Step 5: Solve for x
x = 11,265,631,188.18/118,937.75 - Step 6: Final answer
x = 94,718.72
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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.