Finding the Fourth Proportional to 140,572.57, 193,994.99 and 76,910.36
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Solution
The fourth proportional to 140,572.57, 193,994.99 and 76,910.36 is: 106,138.95
Step by Step Solution
- Step 1: Write the proportion equation
140,572.57 : 193,994.99 = 76,910.36 : x - Step 2: Convert to fraction form
140,572.57/193,994.99 = 76,910.36/x - Step 3: Cross multiply
140,572.57x = 193,994.99 × 76,910.36 - Step 4: Simplify right side
140,572.57x = 14,920,224,519.10 - Step 5: Solve for x
x = 14,920,224,519.10/140,572.57 - Step 6: Final answer
x = 106,138.95
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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.