Finding the Fourth Proportional to 98,627.80, 147,941.70 and 68,447.20
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Solution
The fourth proportional to 98,627.80, 147,941.70 and 68,447.20 is: 102,670.80
Step by Step Solution
- Step 1: Write the proportion equation
98,627.80 : 147,941.70 = 68,447.20 : x - Step 2: Convert to fraction form
98,627.80/147,941.70 = 68,447.20/x - Step 3: Cross multiply
98,627.80x = 147,941.70 × 68,447.20 - Step 4: Simplify right side
98,627.80x = 10,126,195,128.24 - Step 5: Solve for x
x = 10,126,195,128.24/98,627.80 - Step 6: Final answer
x = 102,670.80
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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.