Finding the Fourth Proportional to 98,625.80, 147,938.70 and 68,445.20
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Solution
The fourth proportional to 98,625.80, 147,938.70 and 68,445.20 is: 102,667.80
Step by Step Solution
- Step 1: Write the proportion equation
98,625.80 : 147,938.70 = 68,445.20 : x - Step 2: Convert to fraction form
98,625.80/147,938.70 = 68,445.20/x - Step 3: Cross multiply
98,625.80x = 147,938.70 × 68,445.20 - Step 4: Simplify right side
98,625.80x = 10,125,693,909.24 - Step 5: Solve for x
x = 10,125,693,909.24/98,625.80 - Step 6: Final answer
x = 102,667.80
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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.