Finding the Fourth Proportional to 130,138.75, 194,985.06 and 87,364.09
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Solution
The fourth proportional to 130,138.75, 194,985.06 and 87,364.09 is: 130,896.39
Step by Step Solution
- Step 1: Write the proportion equation
130,138.75 : 194,985.06 = 87,364.09 : x - Step 2: Convert to fraction form
130,138.75/194,985.06 = 87,364.09/x - Step 3: Cross multiply
130,138.75x = 194,985.06 × 87,364.09 - Step 4: Simplify right side
130,138.75x = 17,034,692,330.50 - Step 5: Solve for x
x = 17,034,692,330.50/130,138.75 - Step 6: Final answer
x = 130,896.39
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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.