Finding the Fourth Proportional to 128,805.58, 193,263.99 and 69,682.90
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Solution
The fourth proportional to 128,805.58, 193,263.99 and 69,682.90 is: 104,554.44
Step by Step Solution
- Step 1: Write the proportion equation
128,805.58 : 193,263.99 = 69,682.90 : x - Step 2: Convert to fraction form
128,805.58/193,263.99 = 69,682.90/x - Step 3: Cross multiply
128,805.58x = 193,263.99 × 69,682.90 - Step 4: Simplify right side
128,805.58x = 13,467,195,288.77 - Step 5: Solve for x
x = 13,467,195,288.77/128,805.58 - Step 6: Final answer
x = 104,554.44
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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.