Finding the Fourth Proportional to 134,936.19, 186,214.25 and 87,272.58
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Solution
The fourth proportional to 134,936.19, 186,214.25 and 87,272.58 is: 120,437.65
Step by Step Solution
- Step 1: Write the proportion equation
134,936.19 : 186,214.25 = 87,272.58 : x - Step 2: Convert to fraction form
134,936.19/186,214.25 = 87,272.58/x - Step 3: Cross multiply
134,936.19x = 186,214.25 × 87,272.58 - Step 4: Simplify right side
134,936.19x = 16,251,397,484.02 - Step 5: Solve for x
x = 16,251,397,484.02/134,936.19 - Step 6: Final answer
x = 120,437.65
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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.