Finding the Fourth Proportional to 135,170.19, 186,521.74 and 74,732.58
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Solution
The fourth proportional to 135,170.19, 186,521.74 and 74,732.58 is: 103,123.70
Step by Step Solution
- Step 1: Write the proportion equation
135,170.19 : 186,521.74 = 74,732.58 : x - Step 2: Convert to fraction form
135,170.19/186,521.74 = 74,732.58/x - Step 3: Cross multiply
135,170.19x = 186,521.74 × 74,732.58 - Step 4: Simplify right side
135,170.19x = 13,939,250,669.46 - Step 5: Solve for x
x = 13,939,250,669.46/135,170.19 - Step 6: Final answer
x = 103,123.70
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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.