Finding the Fourth Proportional to 171,909.36, 257,749.68 and 87,700.08
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Solution
The fourth proportional to 171,909.36, 257,749.68 and 87,700.08 is: 131,491.78
Step by Step Solution
- Step 1: Write the proportion equation
171,909.36 : 257,749.68 = 87,700.08 : x - Step 2: Convert to fraction form
171,909.36/257,749.68 = 87,700.08/x - Step 3: Cross multiply
171,909.36x = 257,749.68 × 87,700.08 - Step 4: Simplify right side
171,909.36x = 22,604,667,555.97 - Step 5: Solve for x
x = 22,604,667,555.97/171,909.36 - Step 6: Final answer
x = 131,491.78
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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.