Finding the Fourth Proportional to 128,029.41, 176,680.44 and 74,316.69
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Solution
The fourth proportional to 128,029.41, 176,680.44 and 74,316.69 is: 102,556.95
Step by Step Solution
- Step 1: Write the proportion equation
128,029.41 : 176,680.44 = 74,316.69 : x - Step 2: Convert to fraction form
128,029.41/176,680.44 = 74,316.69/x - Step 3: Cross multiply
128,029.41x = 176,680.44 × 74,316.69 - Step 4: Simplify right side
128,029.41x = 13,130,305,488.54 - Step 5: Solve for x
x = 13,130,305,488.54/128,029.41 - Step 6: Final answer
x = 102,556.95
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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.