Finding the Fourth Proportional to 153,474.42, 211,745.97 and 86,393.46
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Solution
The fourth proportional to 153,474.42, 211,745.97 and 86,393.46 is: 119,195.54
Step by Step Solution
- Step 1: Write the proportion equation
153,474.42 : 211,745.97 = 86,393.46 : x - Step 2: Convert to fraction form
153,474.42/211,745.97 = 86,393.46/x - Step 3: Cross multiply
153,474.42x = 211,745.97 × 86,393.46 - Step 4: Simplify right side
153,474.42x = 18,293,466,989.36 - Step 5: Solve for x
x = 18,293,466,989.36/153,474.42 - Step 6: Final answer
x = 119,195.54
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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.