Finding the Fourth Proportional to 118,867.80, 178,181.76 and 74,525.70
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Solution
The fourth proportional to 118,867.80, 178,181.76 and 74,525.70 is: 111,713.35
Step by Step Solution
- Step 1: Write the proportion equation
118,867.80 : 178,181.76 = 74,525.70 : x - Step 2: Convert to fraction form
118,867.80/178,181.76 = 74,525.70/x - Step 3: Cross multiply
118,867.80x = 178,181.76 × 74,525.70 - Step 4: Simplify right side
118,867.80x = 13,279,120,391.23 - Step 5: Solve for x
x = 13,279,120,391.23/118,867.80 - Step 6: Final answer
x = 111,713.35
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.