Finding the Fourth Proportional to 128,230.38, 176,953.12 and 73,790.95
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Solution
The fourth proportional to 128,230.38, 176,953.12 and 73,790.95 is: 101,828.75
Step by Step Solution
- Step 1: Write the proportion equation
128,230.38 : 176,953.12 = 73,790.95 : x - Step 2: Convert to fraction form
128,230.38/176,953.12 = 73,790.95/x - Step 3: Cross multiply
128,230.38x = 176,953.12 × 73,790.95 - Step 4: Simplify right side
128,230.38x = 13,057,538,830.26 - Step 5: Solve for x
x = 13,057,538,830.26/128,230.38 - Step 6: Final answer
x = 101,828.75
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1.5x scale
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.