Finding the Fourth Proportional to 128,888.97, 193,325.76 and 76,631.01
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Solution
The fourth proportional to 128,888.97, 193,325.76 and 76,631.01 is: 114,941.94
Step by Step Solution
- Step 1: Write the proportion equation
128,888.97 : 193,325.76 = 76,631.01 : x - Step 2: Convert to fraction form
128,888.97/193,325.76 = 76,631.01/x - Step 3: Cross multiply
128,888.97x = 193,325.76 × 76,631.01 - Step 4: Simplify right side
128,888.97x = 14,814,748,247.82 - Step 5: Solve for x
x = 14,814,748,247.82/128,888.97 - Step 6: Final answer
x = 114,941.94
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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.