Finding the Fourth Proportional to 140,281.61, 193,588.62 and 76,619.56
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Solution
The fourth proportional to 140,281.61, 193,588.62 and 76,619.56 is: 105,734.99
Step by Step Solution
- Step 1: Write the proportion equation
140,281.61 : 193,588.62 = 76,619.56 : x - Step 2: Convert to fraction form
140,281.61/193,588.62 = 76,619.56/x - Step 3: Cross multiply
140,281.61x = 193,588.62 × 76,619.56 - Step 4: Simplify right side
140,281.61x = 14,832,674,401.44 - Step 5: Solve for x
x = 14,832,674,401.44/140,281.61 - Step 6: Final answer
x = 105,734.99
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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.