Finding the Fourth Proportional to 140,401.68, 193,692.66 and 83,780.28
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Solution
The fourth proportional to 140,401.68, 193,692.66 and 83,780.28 is: 115,579.99
Step by Step Solution
- Step 1: Write the proportion equation
140,401.68 : 193,692.66 = 83,780.28 : x - Step 2: Convert to fraction form
140,401.68/193,692.66 = 83,780.28/x - Step 3: Cross multiply
140,401.68x = 193,692.66 × 83,780.28 - Step 4: Simplify right side
140,401.68x = 16,227,625,288.74 - Step 5: Solve for x
x = 16,227,625,288.74/140,401.68 - Step 6: Final answer
x = 115,579.99
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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.