Finding the Fourth Proportional to 128,037.72, 176,767.74 and 92,319.96
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Solution
The fourth proportional to 128,037.72, 176,767.74 and 92,319.96 is: 127,456.12
Step by Step Solution
- Step 1: Write the proportion equation
128,037.72 : 176,767.74 = 92,319.96 : x - Step 2: Convert to fraction form
128,037.72/176,767.74 = 92,319.96/x - Step 3: Cross multiply
128,037.72x = 176,767.74 × 92,319.96 - Step 4: Simplify right side
128,037.72x = 16,319,190,686.09 - Step 5: Solve for x
x = 16,319,190,686.09/128,037.72 - Step 6: Final answer
x = 127,456.12
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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.