Finding the Fourth Proportional to 145,772.21, 218,658.31 and 83,398.97
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Solution
The fourth proportional to 145,772.21, 218,658.31 and 83,398.97 is: 125,098.45
Step by Step Solution
- Step 1: Write the proportion equation
145,772.21 : 218,658.31 = 83,398.97 : x - Step 2: Convert to fraction form
145,772.21/218,658.31 = 83,398.97/x - Step 3: Cross multiply
145,772.21x = 218,658.31 × 83,398.97 - Step 4: Simplify right side
145,772.21x = 18,235,877,823.24 - Step 5: Solve for x
x = 18,235,877,823.24/145,772.21 - Step 6: Final answer
x = 125,098.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.