Finding the Fourth Proportional to 134,455.83, 201,461.72 and 78,137.79
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Solution
The fourth proportional to 134,455.83, 201,461.72 and 78,137.79 is: 117,077.65
Step by Step Solution
- Step 1: Write the proportion equation
134,455.83 : 201,461.72 = 78,137.79 : x - Step 2: Convert to fraction form
134,455.83/201,461.72 = 78,137.79/x - Step 3: Cross multiply
134,455.83x = 201,461.72 × 78,137.79 - Step 4: Simplify right side
134,455.83x = 15,741,773,179.71 - Step 5: Solve for x
x = 15,741,773,179.71/134,455.83 - Step 6: Final answer
x = 117,077.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.