Finding the Fourth Proportional to 115,634.64, 173,368.08 and 78,101.76
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Solution
The fourth proportional to 115,634.64, 173,368.08 and 78,101.76 is: 117,095.99
Step by Step Solution
- Step 1: Write the proportion equation
115,634.64 : 173,368.08 = 78,101.76 : x - Step 2: Convert to fraction form
115,634.64/173,368.08 = 78,101.76/x - Step 3: Cross multiply
115,634.64x = 173,368.08 × 78,101.76 - Step 4: Simplify right side
115,634.64x = 13,540,352,175.82 - Step 5: Solve for x
x = 13,540,352,175.82/115,634.64 - Step 6: Final answer
x = 117,095.99
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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.