Finding the Fourth Proportional to 135,393.19, 186,848.45 and 74,963.84
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Solution
The fourth proportional to 135,393.19, 186,848.45 and 74,963.84 is: 103,453.34
Step by Step Solution
- Step 1: Write the proportion equation
135,393.19 : 186,848.45 = 74,963.84 : x - Step 2: Convert to fraction form
135,393.19/186,848.45 = 74,963.84/x - Step 3: Cross multiply
135,393.19x = 186,848.45 × 74,963.84 - Step 4: Simplify right side
135,393.19x = 14,006,877,310.05 - Step 5: Solve for x
x = 14,006,877,310.05/135,393.19 - Step 6: Final answer
x = 103,453.34
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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.