Finding the Fourth Proportional to 138,360.12, 207,412.56 and 54,177.63
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Solution
The fourth proportional to 138,360.12, 207,412.56 and 54,177.63 is: 81,216.47
Step by Step Solution
- Step 1: Write the proportion equation
138,360.12 : 207,412.56 = 54,177.63 : x - Step 2: Convert to fraction form
138,360.12/207,412.56 = 54,177.63/x - Step 3: Cross multiply
138,360.12x = 207,412.56 × 54,177.63 - Step 4: Simplify right side
138,360.12x = 11,237,120,933.03 - Step 5: Solve for x
x = 11,237,120,933.03/138,360.12 - Step 6: Final answer
x = 81,216.47
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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.