Finding the Fourth Proportional to 135,336.32, 186,761.84 and 74,905.66
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Solution
The fourth proportional to 135,336.32, 186,761.84 and 74,905.66 is: 103,368.55
Step by Step Solution
- Step 1: Write the proportion equation
135,336.32 : 186,761.84 = 74,905.66 : x - Step 2: Convert to fraction form
135,336.32/186,761.84 = 74,905.66/x - Step 3: Cross multiply
135,336.32x = 186,761.84 × 74,905.66 - Step 4: Simplify right side
135,336.32x = 13,989,518,888.01 - Step 5: Solve for x
x = 13,989,518,888.01/135,336.32 - Step 6: Final answer
x = 103,368.55
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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.