Finding the Fourth Proportional to 161,920.80, 224,197.20 and 149,479.20
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Solution
The fourth proportional to 161,920.80, 224,197.20 and 149,479.20 is: 206,970.43
Step by Step Solution
- Step 1: Write the proportion equation
161,920.80 : 224,197.20 = 149,479.20 : x - Step 2: Convert to fraction form
161,920.80/224,197.20 = 149,479.20/x - Step 3: Cross multiply
161,920.80x = 224,197.20 × 149,479.20 - Step 4: Simplify right side
161,920.80x = 33,512,818,098.24 - Step 5: Solve for x
x = 33,512,818,098.24/161,920.80 - Step 6: Final answer
x = 206,970.43
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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.