Finding the Fourth Proportional to 134,838.20, 186,068.84 and 74,408.68
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Solution
The fourth proportional to 134,838.20, 186,068.84 and 74,408.68 is: 102,679.63
Step by Step Solution
- Step 1: Write the proportion equation
134,838.20 : 186,068.84 = 74,408.68 : x - Step 2: Convert to fraction form
134,838.20/186,068.84 = 74,408.68/x - Step 3: Cross multiply
134,838.20x = 186,068.84 × 74,408.68 - Step 4: Simplify right side
134,838.20x = 13,845,136,773.53 - Step 5: Solve for x
x = 13,845,136,773.53/134,838.20 - Step 6: Final answer
x = 102,679.63
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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.