Finding the Fourth Proportional to 135,311.21, 186,726.67 and 74,878.26
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Solution
The fourth proportional to 135,311.21, 186,726.67 and 74,878.26 is: 103,330.44
Step by Step Solution
- Step 1: Write the proportion equation
135,311.21 : 186,726.67 = 74,878.26 : x - Step 2: Convert to fraction form
135,311.21/186,726.67 = 74,878.26/x - Step 3: Cross multiply
135,311.21x = 186,726.67 × 74,878.26 - Step 4: Simplify right side
135,311.21x = 13,981,767,257.77 - Step 5: Solve for x
x = 13,981,767,257.77/135,311.21 - Step 6: Final answer
x = 103,330.44
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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.