Finding the Fourth Proportional to 147,045.70, 202,960.09 and 83,421.70
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Solution
The fourth proportional to 147,045.70, 202,960.09 and 83,421.70 is: 115,142.95
Step by Step Solution
- Step 1: Write the proportion equation
147,045.70 : 202,960.09 = 83,421.70 : x - Step 2: Convert to fraction form
147,045.70/202,960.09 = 83,421.70/x - Step 3: Cross multiply
147,045.70x = 202,960.09 × 83,421.70 - Step 4: Simplify right side
147,045.70x = 16,931,275,739.95 - Step 5: Solve for x
x = 16,931,275,739.95/147,045.70 - Step 6: Final answer
x = 115,142.95
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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.