Finding the Fourth Proportional to 138,363.14, 189,695.70 and 135,840.88
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Solution
The fourth proportional to 138,363.14, 189,695.70 and 135,840.88 is: 186,237.68
Step by Step Solution
- Step 1: Write the proportion equation
138,363.14 : 189,695.70 = 135,840.88 : x - Step 2: Convert to fraction form
138,363.14/189,695.70 = 135,840.88/x - Step 3: Cross multiply
138,363.14x = 189,695.70 × 135,840.88 - Step 4: Simplify right side
138,363.14x = 25,768,430,820.22 - Step 5: Solve for x
x = 25,768,430,820.22/138,363.14 - Step 6: Final answer
x = 186,237.68
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.