Finding the Fourth Proportional to 135,378.36, 203,030.40 and 75,332.88
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Solution
The fourth proportional to 135,378.36, 203,030.40 and 75,332.88 is: 112,978.65
Step by Step Solution
- Step 1: Write the proportion equation
135,378.36 : 203,030.40 = 75,332.88 : x - Step 2: Convert to fraction form
135,378.36/203,030.40 = 75,332.88/x - Step 3: Cross multiply
135,378.36x = 203,030.40 × 75,332.88 - Step 4: Simplify right side
135,378.36x = 15,294,864,759.55 - Step 5: Solve for x
x = 15,294,864,759.55/135,378.36 - Step 6: Final answer
x = 112,978.65
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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.