Finding the Fourth Proportional to 115,973.92, 160,041.36 and 68,216.80
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Solution
The fourth proportional to 115,973.92, 160,041.36 and 68,216.80 is: 94,137.63
Step by Step Solution
- Step 1: Write the proportion equation
115,973.92 : 160,041.36 = 68,216.80 : x - Step 2: Convert to fraction form
115,973.92/160,041.36 = 68,216.80/x - Step 3: Cross multiply
115,973.92x = 160,041.36 × 68,216.80 - Step 4: Simplify right side
115,973.92x = 10,917,509,446.85 - Step 5: Solve for x
x = 10,917,509,446.85/115,973.92 - Step 6: Final answer
x = 94,137.63
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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.