Finding the Fourth Proportional to 136,445.84, 204,290.88 and 69,742.40
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Solution
The fourth proportional to 136,445.84, 204,290.88 and 69,742.40 is: 104,420.45
Step by Step Solution
- Step 1: Write the proportion equation
136,445.84 : 204,290.88 = 69,742.40 : x - Step 2: Convert to fraction form
136,445.84/204,290.88 = 69,742.40/x - Step 3: Cross multiply
136,445.84x = 204,290.88 × 69,742.40 - Step 4: Simplify right side
136,445.84x = 14,247,736,269.31 - Step 5: Solve for x
x = 14,247,736,269.31/136,445.84 - Step 6: Final answer
x = 104,420.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.