Finding the Fourth Proportional to 135,989.40, 187,656.68 and 75,558.96
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Solution
The fourth proportional to 135,989.40, 187,656.68 and 75,558.96 is: 104,266.54
Step by Step Solution
- Step 1: Write the proportion equation
135,989.40 : 187,656.68 = 75,558.96 : x - Step 2: Convert to fraction form
135,989.40/187,656.68 = 75,558.96/x - Step 3: Cross multiply
135,989.40x = 187,656.68 × 75,558.96 - Step 4: Simplify right side
135,989.40x = 14,179,143,577.85 - Step 5: Solve for x
x = 14,179,143,577.85/135,989.40 - Step 6: Final answer
x = 104,266.54
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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.