Finding the Fourth Proportional to 138,446.84, 191,056.68 and 74,784.68
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Solution
The fourth proportional to 138,446.84, 191,056.68 and 74,784.68 is: 103,202.88
Step by Step Solution
- Step 1: Write the proportion equation
138,446.84 : 191,056.68 = 74,784.68 : x - Step 2: Convert to fraction form
138,446.84/191,056.68 = 74,784.68/x - Step 3: Cross multiply
138,446.84x = 191,056.68 × 74,784.68 - Step 4: Simplify right side
138,446.84x = 14,288,112,675.66 - Step 5: Solve for x
x = 14,288,112,675.66/138,446.84 - Step 6: Final answer
x = 103,202.88
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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.