Finding the Fourth Proportional to 140,415.84, 193,773.42 and 76,753.68
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Solution
The fourth proportional to 140,415.84, 193,773.42 and 76,753.68 is: 105,919.84
Step by Step Solution
- Step 1: Write the proportion equation
140,415.84 : 193,773.42 = 76,753.68 : x - Step 2: Convert to fraction form
140,415.84/193,773.42 = 76,753.68/x - Step 3: Cross multiply
140,415.84x = 193,773.42 × 76,753.68 - Step 4: Simplify right side
140,415.84x = 14,872,823,071.19 - Step 5: Solve for x
x = 14,872,823,071.19/140,415.84 - Step 6: Final answer
x = 105,919.84
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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.